fixup! Skip Windows CI tests on Unix build system changes

Author: AA-Turner

.github/workflows/build.yml

@@ -154,7 +154,7 @@ jobs:
       Windows
       ${{ fromJSON(matrix.free-threading) && '(free-threading)' || '' }}
     needs: build-context
-    if: fromJSON(needs.check_source.outputs.run-windows-tests)
+    if: fromJSON(needs.build-context.outputs.run-windows-tests)
     strategy:
       fail-fast: false
       matrix: