only hardcode US keyboard, let image default control locale

Previous fix set SystemLocale/UILanguage/UserLocale=en-GB explicitly,
which pins the autounattend.xml to a specific image variant. Drop
those and keep only InputLocale=0409:00000409 in all three passes
(windowsPE/specialize/oobeSystem). Also remove SetupUILanguage/
UILanguage from the windowsPE InternationalCore component.

Result: US keyboard is forced regardless of image, and every other
locale (SystemLocale, UILanguage, UserLocale) inherits from whatever
the ISO ships with. Same autounattend.xml now works for English
International, English (US), or any other edition without edits.

Author: CMGS

autounattend.xml

@@ -2,11 +2,7 @@
 <unattend xmlns="urn:schemas-microsoft-com:unattend">
   <settings pass="windowsPE">
     <component name="Microsoft-Windows-International-Core-WinPE" processorArchitecture="amd64" publicKeyToken="31bf3856ad364e35" language="neutral" versionScope="nonSxS" xmlns:wcm="http://schemas.microsoft.com/WMIConfig/2002/State" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
-      <SetupUILanguage><UILanguage>en-GB</UILanguage></SetupUILanguage>
       <InputLocale>0409:00000409</InputLocale>
-      <UILanguage>en-GB</UILanguage>
-      <SystemLocale>en-GB</SystemLocale>
-      <UserLocale>en-GB</UserLocale>
     </component>
     <component name="Microsoft-Windows-PnpCustomizationsWinPE" processorArchitecture="amd64" publicKeyToken="31bf3856ad364e35" language="neutral" versionScope="nonSxS" xmlns:wcm="http://schemas.microsoft.com/WMIConfig/2002/State" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
       <DriverPaths>
@@ -55,18 +51,12 @@
     </component>
     <component name="Microsoft-Windows-International-Core" processorArchitecture="amd64" publicKeyToken="31bf3856ad364e35" language="neutral" versionScope="nonSxS" xmlns:wcm="http://schemas.microsoft.com/WMIConfig/2002/State" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
       <InputLocale>0409:00000409</InputLocale>
-      <SystemLocale>en-GB</SystemLocale>
-      <UILanguage>en-GB</UILanguage>
-      <UserLocale>en-GB</UserLocale>
     </component>
   </settings>
   <settings pass="oobeSystem">
-    <!-- V11: Force locale in oobeSystem to skip OOBE country/keyboard screens (Win11 25H2) -->
+    <!-- V11: Force US keyboard in oobeSystem; locale untouched so image default is used -->
     <component name="Microsoft-Windows-International-Core" processorArchitecture="amd64" publicKeyToken="31bf3856ad364e35" language="neutral" versionScope="nonSxS" xmlns:wcm="http://schemas.microsoft.com/WMIConfig/2002/State" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
       <InputLocale>0409:00000409</InputLocale>
-      <SystemLocale>en-GB</SystemLocale>
-      <UILanguage>en-GB</UILanguage>
-      <UserLocale>en-GB</UserLocale>
     </component>
     <component name="Microsoft-Windows-Shell-Setup" processorArchitecture="amd64" publicKeyToken="31bf3856ad364e35" language="neutral" versionScope="nonSxS" xmlns:wcm="http://schemas.microsoft.com/WMIConfig/2002/State" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
       <OOBE><HideEULAPage>true</HideEULAPage><HideOnlineAccountScreens>true</HideOnlineAccountScreens><HideWirelessSetupInOOBE>true</HideWirelessSetupInOOBE><ProtectYourPC>3</ProtectYourPC></OOBE>