GHA: Move from always() to !cancelled()

And add extra step to mark cancelled jobs as failed.

.github/workflows/ci.yml

@@ -121,25 +121,25 @@ jobs:
           IGNORE_PATHS: tests/fixtures
 
       - name: PHP Lint
-        if: ${{ always() }}
+        if: ${{ !cancelled() }}
         run: moodle-plugin-ci phplint
 
       - name: PHP Copy/Paste Detector
         continue-on-error: true # This step will show errors but will not fail
-        if: ${{ always() }}
+        if: ${{ !cancelled() }}
         run: moodle-plugin-ci phpcpd
 
       - name: PHP Mess Detector
         continue-on-error: true # This step will show errors but will not fail
-        if: ${{ always() }}
+        if: ${{ !cancelled() }}
         run: moodle-plugin-ci phpmd
 
       - name: Moodle Code Checker
-        if: ${{ always() }}
+        if: ${{ !cancelled() }}
         run: moodle-plugin-ci codechecker --max-warnings 0
 
       - name: Moodle PHPDoc Checker
-        if: ${{ always() }}
+        if: ${{ !cancelled() }}
         run: |
           if [ ${{ matrix.plugin-ci }} == "^3" ]; then
               moodle-plugin-ci phpdoc
@@ -148,25 +148,29 @@ jobs:
           fi
 
       - name: Validating
-        if: ${{ always() }}
+        if: ${{ !cancelled() }}
         run: moodle-plugin-ci validate
 
       - name: Check upgrade savepoints
-        if: ${{ always() }}
+        if: ${{ !cancelled() }}
         run: moodle-plugin-ci savepoints
 
       - name: Mustache Lint
-        if: ${{ always() }}
+        if: ${{ !cancelled() }}
         run: moodle-plugin-ci mustache
 
       - name: Grunt
-        if: ${{ always() }}
+        if: ${{ !cancelled() }}
         run: moodle-plugin-ci grunt --max-lint-warnings 0
 
       - name: PHPUnit tests
-        if: ${{ always() }}
+        if: ${{ !cancelled() }}
         run: moodle-plugin-ci phpunit
 
       - name: Behat features
-        if: ${{ always() }}
+        if: ${{ !cancelled() }}
         run: moodle-plugin-ci behat --profile chrome
+
+      - name: Mark cancelled jobs as failed.
+        if: ${{ cancelled() }}
+        run: exit 1