Build/Test Tools: Account for old branches in file checks.

Because old branches reference the reusable workflow files in `trunk` and their respective `.gitignore` files were not updated, some adjustments are needed to prevent failures in numbered branches.

Follow up to [62533].

See #64893.

git-svn-id: https://develop.svn.wordpress.org/trunk@62534 602fd350-edb4-49c9-b593-d223f7449a82

Author: desrosj

.github/workflows/reusable-phpunit-tests-v2.yml

@@ -209,9 +209,4 @@ jobs:
         run: LOCAL_PHP_XDEBUG=true npm run "test:${PHPUNIT_SCRIPT}" -- -v --group xdebug --exclude-group __fakegroup__
 
       - name: Check for uncommitted changes
-        run: |
-          if [ -n "$(git status --porcelain)" ]; then
-            echo "Uncommitted changes detected:"
-            git status --porcelain
-            exit 1
-          fi
+        run: git diff --exit-code

.github/workflows/reusable-test-core-build-process.yml

@@ -146,7 +146,7 @@ jobs:
       - name: Check for uncommitted changes after cleaning
         shell: bash
         run: |
-          if [ -n "$(git status --porcelain)" ]; then
+          if [ -z "$(git status --porcelain -- . ':!wordpress.zip')" ]; then
             echo "Uncommitted changes detected:"
             git status --porcelain
             exit 1