Fix CI: Pin to windows-2022 runners

Windows 2025 runners removed all preinstalled SDKs except latest,
breaking all CI builds. Pin to windows-2022 to restore SDK availability.

Changes:
- windows-latest → windows-2022 (test if D drive disk space fixed)
- windows-latest-large → windows-2022-large (prep fallback)
- Update tooling submodule with same fix

Fixes #741

Author: Arlodotexe

.github/workflows/build.yml

@@ -30,7 +30,7 @@ env:
 jobs:
   # This workflow contains a single job called "Xaml-Style-Check"
   Xaml-Style-Check:
-    runs-on: windows-latest
+    runs-on: windows-2022
 
     # Steps represent a sequence of tasks that will be executed as part of the job
     steps:
@@ -58,7 +58,7 @@ jobs:
   # Build both Uno.UI/WinUI2/UWP and Uno.WinUI/WinUI3/WindowsAppSDK versions of our packages using a matrix
   build:
     needs: [Xaml-Style-Check]
-    runs-on: windows-latest-large
+    runs-on: windows-2022-large
 
     # See https://docs.github.com/actions/using-jobs/using-a-matrix-for-your-jobs
     strategy:
@@ -236,7 +236,7 @@ jobs:
           dotnet-dump analyze ${{ steps.filter.outputs.dump_files }} -c "clrstack" -c "pe -lines" -c "exit"
 
   package:
-    runs-on: windows-latest-large
+    runs-on: windows-2022-large
     needs: [build]
     strategy:
       fail-fast: false # prevent one matrix pipeline from being cancelled if one fails, we want them all to run to completion.
@@ -360,7 +360,7 @@ jobs:
   sign:
     needs: [package]
     if: ${{ startsWith(github.ref, 'refs/heads/rel/') || startsWith(github.ref, 'refs/tags/') }}
-    runs-on: windows-latest
+    runs-on: windows-2022
     permissions:
       id-token: write # Required for requesting the JWT