Fix linter failure

Author: VimukthiPerera

.github/workflows/linter.yml

@@ -1,6 +1,8 @@
 name: Lint Code Base
 
 on:
+  pull_request:
+    types: [opened, synchronize, reopened, ready_for_review]
   pull_request_review:
     types: [submitted]
 
@@ -9,7 +11,7 @@ permissions:
 
 jobs:
   lint:
-    if: github.event_name == 'pull_request_review' && github.event.review.state == 'approved'
+    if: github.event_name == 'pull_request' || (github.event_name == 'pull_request_review' && github.event.review.state == 'approved')
     name: Lint Code Base
     runs-on: ubuntu-latest
     steps:
@@ -23,9 +25,13 @@ jobs:
           # Disable credential persistence to harden the runner
           persist-credentials: false
 
+      - name: Fetch base branch for diff
+        run: git fetch --no-tags --prune origin "+refs/heads/${{ github.event.pull_request.base.ref }}:refs/remotes/origin/${{ github.event.pull_request.base.ref }}"
+
       - name: Lint Code Base
         uses: super-linter/super-linter@12150456a73e248bdc94d0794898f94e23127c88 # v7
         env:
           VALIDATE_ALL_CODEBASE: false
           DEFAULT_BRANCH: ${{ github.event.pull_request.base.ref }}
+          GITHUB_SHA: ${{ github.event.pull_request.head.sha }}
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}