Fix unit test windows workflow file to catch no test results produced as an error not warn

also change to fail fast true for matrix
no value in running some if one fails

Author: knewbury01

.github/workflows/ql-unit-tests-windows.yml

@@ -35,7 +35,7 @@ jobs:
     name: ${{ matrix.test_suite }}
     runs-on: windows-latest
     strategy:
-      fail-fast: false
+      fail-fast: true
       matrix:
         test_suite:
           - cap-models
@@ -292,7 +292,8 @@ jobs:
           name: windows-test-results-${{ matrix.test_suite }}
           path: |
             ${{ runner.temp }}/test-results/
-          if-no-files-found: warn
+	  # No files here would mean there was a test error overall
+          if-no-files-found: error
 
       - name: Upload CAP test artifacts
         if: ${{ always() && (matrix.test_suite == 'cap-models' || matrix.test_suite == 'cap-queries') }}