Enable playwright tests on Windows

Author: stefanvanburen

.github/workflows/build.yaml

@@ -57,7 +57,7 @@ jobs:
         # NOTE: We disable playwright tests when buf is not installed on the system $PATH
         # for now so we don't have the extension attempting to resolve the installation.
         # We'll need to find a way to intercept the call from playwright's VS Code extension.
-        if: runner.os == 'macOS' && matrix.buf-bin-setup == 'buf-on-path'
+        if: (runner.os == 'macOS' || runner.os == 'windows') && matrix.buf-bin-setup == 'buf-on-path'
       - name: check diff
         run: node scripts/gh-diffcheck.mjs
       - name: upload-playwright-test-results