Fix Get Installed toggle detection and multiple config bugs (#3959)

Fixes the issue where "Get Installed" in the Tweaks tab was not correctly
pulling all toggle states, plus several additional config bugs discovered
during investigation.

Changes:
- Unified toggle detection logic using Get-WinUtilToggleStatus
- Fixed registry value detection (0 values were incorrectly treated as missing)
- Added DefaultState support for missing registry keys
- Fixed WPFTweaksUTC registry type (QWord → DWord)
- Fixed WPFTweaksServices startup types (TermService, VaultSvc: Automatic → Manual)
- Fixed duplicate order collisions in tweaks
- Fixed FFmpeg display name
- Improved OneDrive removal script reliability
- Improved Copilot removal script with wildcard pattern and null check
- Fixed code formatting (added spaces after if/Foreach statements)

Files changed:
- functions/private/Invoke-WinUtilCurrentSystem.ps1
- functions/private/Get-WinUtilToggleStatus.ps1
- config/tweaks.json
- config/applications.json

Fixes #3762
Fixes #3189
Fixes #3876
Potentially fixes #3008
Potentially fixes #3815

functions/private/Get-WinUtilToggleStatus.ps1

@@ -45,7 +45,7 @@ Function Get-WinUtilToggleStatus {
                 } else {
                     Write-Debug "$($regentry.Name) is false (state: $regstate, value: $($regentry.Value), original: $($regentry.OriginalValue))"
                 }
-                if (!$regstate) {
+                if ($null -eq $regstate) {
                     switch ($regentry.DefaultState) {
                         "true" {
                             $regstate = $regentry.Value