Speed up runspace and tab initialization (#4793)

* Add startup performance tracing

* Lazy initialize non-default tabs

* Render install app entries incrementally

* Defer and cache toggle status checks

* Clean up runspace invocation ownership

* Defer GUI runspace pool startup

* Defer status taskbar asset rendering

* Record final speed verification

* Fix deferred install render timer callback

* Add dispatcher smoke coverage for install rendering

* Replace install render timer with dispatcher callbacks

* Gate performance tracing behind compile switch

* Clean up analyzer warnings in speed changes

* Speed up runspace and tab initialization

functions/public/Invoke-WPFTab.ps1

@@ -29,6 +29,7 @@ function Invoke-WPFTab {
         }
     }
     $sync.currentTab = $sync.$tabNav.Items[$tabNumber].Header
+    Initialize-WinUtilTabContent -TabName $sync.currentTab
 
     # Always reset the filter for the current tab
     if ($sync.currentTab -eq "Install") {