Fix CI: pin to windows-2022 and enable tag-based releases

windows-latest now resolves to windows-2025-vs2026 which lacks the
v143 (VS 2022) platform toolset required by the vcxproj files.
Pin all Windows jobs to windows-2022 to fix MSB8020 build failures.

Also re-enable the release job's tag guard and the actual GitHub
release creation step that were disabled for testing.

Author: willwade

.github/workflows/msbuild.yml

@@ -20,7 +20,7 @@ env:
 jobs:
   build-sherpa-config:
     name: Build SherpaOnnxConfig
-    runs-on: windows-latest
+    runs-on: windows-2022
 
     permissions:
       contents: read
@@ -47,7 +47,7 @@ jobs:
 
   build-utilities:
     name: Build submodules
-    runs-on: windows-latest
+    runs-on: windows-2022
     needs: build-sherpa-config
 
     permissions:
@@ -137,7 +137,7 @@ jobs:
 
   build-main:
     name: Build NaturalVoiceSAPIAdapter
-    runs-on: windows-latest
+    runs-on: windows-2022
 
     permissions:
       contents: read
@@ -220,7 +220,7 @@ jobs:
 
   build-setup:
     name: Build MSI setup
-    runs-on: windows-latest
+    runs-on: windows-2022
     needs: [build-sherpa-config, build-utilities, build-main]
 
     permissions:
@@ -286,9 +286,7 @@ jobs:
   release:
     runs-on: ubuntu-latest
     needs: [build-sherpa-config, build-utilities, build-main, build-setup]
-    # TEMPORARY: Disabled tag check for testing release ZIP creation
-    # REVERT BEFORE MERGE: Uncomment the line below to only create releases on tags
-    # if: github.ref_type == 'tag'
+    if: github.ref_type == 'tag'
 
     permissions:
       contents: write
@@ -328,9 +326,7 @@ jobs:
         zip -r NaturalVoiceSAPIAdapter_${ver}_release-layout.zip x86 x64 ARM64 Installer.exe InstallPlanRunner.exe setup.exe NaturalVoiceSAPIAdapter.msi branding.json -i "*.exe" "*.dll" "*.json" "*.msi"
 
     - name: Create release
-      # TEMPORARY: Disabled for testing - ZIPs will be available as artifacts only
-      # REVERT BEFORE MERGE: Uncomment the uses: line below to create GitHub releases
-      if: false
+      if: github.ref_type == 'tag'
       uses: softprops/action-gh-release@v2
       with:
         body_path: ${{github.workspace}}/release_notes.md