Build/Test Tools: Ensure PHPCS related workflows are properly marked as failed.

When a ruleset error is encountered during a PHPCodeSniffer scan, an XML report is not generated and `cs2pr` will exit with a `0`.

In this situation, a workflow run will be marked as passing (even though a failure has occurred) due to the presence of `continue-on-error`.

This adjusts the logic in the Coding Standards and PHP Compatibility workflows to remove the need for the `continue-on-error` option and ensures all failures are accurately reflected within the GitHub Actions UI.

Follow up to [54371].

Props jrf, TobiasBg.
See #55652.

git-svn-id: https://develop.svn.wordpress.org/trunk@54678 602fd350-edb4-49c9-b593-d223f7449a82

.github/workflows/coding-standards.yml

@@ -102,17 +102,19 @@ jobs:
         run: phpcs -i
 
       - name: Run PHPCS on all Core files
-        continue-on-error: true
+        id: phpcs-core
         run: phpcs -n --report-full --report-checkstyle=./.cache/phpcs-report.xml
 
       - name: Show PHPCS results in PR
+        if: ${{ always() && steps.phpcs-core.outcome == 'failure' }}
         run: cs2pr ./.cache/phpcs-report.xml
 
       - name: Check test suite files for warnings
-        continue-on-error: true
+        id: phpcs-tests
         run: phpcs tests --report-full --report-checkstyle=./.cache/phpcs-tests-report.xml
 
       - name: Show test suite scan results in PR
+        if: ${{ always() && steps.phpcs-tests.outcome == 'failure' }}
         run: cs2pr ./.cache/phpcs-tests-report.xml
 
       - name: Ensure version-controlled files are not modified during the tests

.github/workflows/php-compatibility.yml

@@ -97,10 +97,11 @@ jobs:
         run: phpcs -i
 
       - name: Run PHP compatibility tests
-        continue-on-error: true
+        id: phpcs
         run: phpcs --standard=phpcompat.xml.dist --report-full --report-checkstyle=./.cache/phpcs-compat-report.xml
 
       - name: Show PHPCompatibility results in PR
+        if: ${{ always() && steps.phpcs.outcome == 'failure' }}
         run: cs2pr ./.cache/phpcs-compat-report.xml
 
       - name: Ensure version-controlled files are not modified or deleted