Optimize test job: remove package restore, use windows-latest pool

- Test job doesn't need NuGet packages, pylance, or debugpy
- Glass tests only need Python + product binaries + source scripts
- Use windows-latest hosted pool (no VS/MSBuild needed)
- Saves ~1:12 restore time and faster agent allocation

Author: bschnurr

azure-pipelines.yml

@@ -323,17 +323,12 @@ extends:
           displayName: Test
           dependsOn: build
           continueOnError: true
+          pool:
+            vmImage: 'windows-latest'
           steps:
           - checkout: self
             clean: true
 
-          # Restore packages needed for test build
-          - template: /Build/templates/restore_packages.yml@self
-            parameters:
-              pylanceVersion: ${{ parameters.pylanceVersion }}
-              pylanceReleaseType: ${{ variables.pylanceReleaseTypeVar }}
-              debugpyVersion: ${{ parameters.debugpyVersion }}
-
           - template: /Build/templates/run_tests.yml@self
             parameters:
               skipGlassCache: ${{ parameters.skipGlassCache }}