Expand Pester coverage across install, tweaks, and UI workflows (#4792)

* Harden Pester CI and discard runspace return values

* Add prioritized test backlog

* Add WinUtil action logging

* Add config integrity tests

* Add XAML control wiring tests

* Add registry and service helper tests

* Add package manager tests

* Add runspace behavior tests

* Add tweak orchestration tests

* Add install workflow tests

* Add update profile tests

* Add AppX removal tests

* Log package installer output

* Add UI state helper tests

* Pin Pester test runner version

* Expand Win11 Creator tests

* Add preferences and theme tests

* Add search filter tests

* Add compile contract tests

* Use single WinUtil session log

* Remove installer output logging helper

* Handle locked WinUtil transcript log

* Avoid appending to active transcript log

* Log install uninstall package identities

functions/private/Remove-WinUtilAPPX.ps1

@@ -16,6 +16,8 @@ function Remove-WinUtilAPPX {
     )
 
     Write-Host "Removing $Name"
+    Write-WinUtilLog -Component "AppX" -Message "Removing AppX package pattern: $Name"
     Get-AppxPackage $Name -AllUsers | Remove-AppxPackage -AllUsers
     Get-AppxProvisionedPackage -Online | Where-Object DisplayName -like $Name | Remove-AppxProvisionedPackage -Online
+    Write-WinUtilLog -Component "AppX" -Message "AppX removal completed for package pattern: $Name"
 }