test: [DI-30129] - Add spec for show details notification channel (#13449)

* test: [DI-30129] - Add spec for show details notification channel

* Added changeset: Adding  spec for show details notification channel

* addressing review comments

---------

Co-authored-by: shnagend-akamai <142887750+shnagend@users.noreply.github.com>
Co-authored-by: dmcintyr-akamai <dmcintyr@akamai.com>
Co-authored-by: santoshp210-akamai <159890961+santoshp210-akamai@users.noreply.github.com>
Co-authored-by: venkatmano-akamai <vmangalr@akamai.com>

Author: 4 people

packages/manager/.changeset/pr-13449-tests-1772265280573.md

@@ -0,0 +1,5 @@
+---
+"@linode/manager": Tests
+---
+
+Adding  spec for show details notification channel ([#13449](https://github.com/linode/manager/pull/13449))