Clean up analyzer warnings across app search and ISO workflows (#4794)

* Clean up analyzer warnings

* Align analyzer warning cleanup policy

* Run PSScriptAnalyzer directly in unittests workflow

* Bind lazy-rendered buttons to click handlers

* Remove WinUtil performance tracing

* Fix Win11 ISO creator temp directory reuse

functions/private/Invoke-WinUtilSponsors.ps1

@@ -1,4 +1,4 @@
 Function Invoke-WinUtilSponsors {
-    $sponsors = ([regex]::Matches(([regex]::Match((irm https://github.com/sponsors/ChrisTitusTech),'(?s)(?<=Current sponsors).*?(?=Past sponsors)')).Value,'(?<=alt="@)[^"]+')).Value | Where-Object {$_ -ne "ChrisTitusTech"}
+    $sponsors = ([regex]::Matches(([regex]::Match((Invoke-RestMethod https://github.com/sponsors/ChrisTitusTech),'(?s)(?<=Current sponsors).*?(?=Past sponsors)')).Value,'(?<=alt="@)[^"]+')).Value | Where-Object {$_ -ne "ChrisTitusTech"}
     return $sponsors
 }