Paragraph formatting in table cells is different when the `a` style operator is applied

[eric-schneider]

Applying the AsciiDoc style operator (a), either to an individual cell or a whole column, affects the spacing between paragraphs (and perhaps more; see #111).

Steps to reproduce the bug

Add the following syntax example to an adoc file:

AsciiDoc syntax example

[cols="1,1,2"]
|===
|Serverless (Vector) databases |Serverless (Non-Vector) databases |Description

|Document or row
|Row
|A contiguous piece of data, having one or more properties (values), that is stored in a collection or table in a database.

Documents belong to collections, and document properties are stored in _fields_.

Rows belong to tables, and row properties are stored in _columns_.

|Field or column
|Column
|The individual values, properties, or attributes that make up a complete document or row of data.
For example, a table containing purchase history for an online store might include values like `name`, `address`, `customer_id`, `purchase_date`, and `order_id` in each row.

Properties can be stored as various data types, like text, numbers, arrays, dates, booleans, and vectors.
|===


[cols="1,1,2a"]
|===
|Serverless (Vector) databases |Serverless (Non-Vector) databases |Description

|Document or row
|Row
|A contiguous piece of data, having one or more properties (values), that is stored in a collection or table in a database.

Documents belong to collections, and document properties are stored in _fields_.

Rows belong to tables, and row properties are stored in _columns_.

|Field or column
|Column
|The individual values, properties, or attributes that make up a complete document or row of data.
For example, a table containing purchase history for an online store might include values like `name`, `address`, `customer_id`, `purchase_date`, and `order_id` in each row.

Properties can be stored as various data types, like text, numbers, arrays, dates, booleans, and vectors.
|===

The syntax example contains two near-identical tables. The only difference is that the second table has the AsciiDoc a operator applied to the cells in the 3rd column.

Generated HTML

Without a:

<table class="tableblock frame-all grid-all stripes-hover stretch">
<colgroup>
<col style="width: 25%;">
<col style="width: 25%;">
<col style="width: 50%;">
</colgroup>
<thead>
<tr>
<th class="tableblock halign-left valign-top">Serverless (Vector) databases</th>
<th class="tableblock halign-left valign-top">Serverless (Non-Vector) databases</th>
<th class="tableblock halign-left valign-top">Description</th>
</tr>
</thead>
<tbody>
<tr>
<td class="tableblock halign-left valign-top"><p class="tableblock">Document or row</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">Row</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">A contiguous piece of data, having one or more properties (values), that is stored in a collection or table in a database.</p>
<p class="tableblock">Documents belong to collections, and document properties are stored in <em>fields</em>.</p>
<p class="tableblock">Rows belong to tables, and row properties are stored in <em>columns</em>.</p></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top"><p class="tableblock">Field or column</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">Column</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">The individual values, properties, or attributes that make up a complete document or row of data.
For example, a table containing purchase history for an online store might include values like <code>name</code>, <code>address</code>, <code>customer_id</code>, <code>purchase_date</code>, and <code>order_id</code> in each row.</p>
<p class="tableblock">Properties can be stored as various data types, like text, numbers, arrays, dates, booleans, and vectors.</p></td>
</tr>
</tbody>
</table>

With a:

<table class="tableblock frame-all grid-all stripes-hover stretch">
<colgroup>
<col style="width: 25%;">
<col style="width: 25%;">
<col style="width: 50%;">
</colgroup>
<thead>
<tr>
<th class="tableblock halign-left valign-top">Serverless (Vector) databases</th>
<th class="tableblock halign-left valign-top">Serverless (Non-Vector) databases</th>
<th class="tableblock halign-left valign-top">Description</th>
</tr>
</thead>
<tbody>
<tr>
<td class="tableblock halign-left valign-top"><p class="tableblock">Document or row</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">Row</p></td>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>A contiguous piece of data, having one or more properties (values), that is stored in a collection or table in a database.</p>
</div>
<div class="paragraph">
<p>Documents belong to collections, and document properties are stored in <em>fields</em>.</p>
</div>
<div class="paragraph">
<p>Rows belong to tables, and row properties are stored in <em>columns</em>.</p>
</div></div></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top"><p class="tableblock">Field or column</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">Column</p></td>
<td class="tableblock halign-left valign-top"><div class="content"><div class="paragraph">
<p>The individual values, properties, or attributes that make up a complete document or row of data.
For example, a table containing purchase history for an online store might include values like <code>name</code>, <code>address</code>, <code>customer_id</code>, <code>purchase_date</code>, and <code>order_id</code> in each row.</p>
</div>
<div class="paragraph">
<p>Properties can be stored as various data types, like text, numbers, arrays, dates, booleans, and vectors.</p>
</div></div></td>
</tr>
</tbody>
</table>

You can see in the HTML that in cells without the a operator applied, paragraphs are generated like so:

<p class="tableblock">A contiguous piece of data, having one or more properties (values), that is stored in a collection or table in a database.</p>

Whereas in cells with the a operator applied, elements are generated as divs:

<div class="content"><div class="paragraph">
<p>A contiguous piece of data, having one or more properties (values), that is stored in a collection or table in a database.</p>