grep fix

.github/workflows/check-non-re2-regex.yml

@@ -27,7 +27,7 @@ jobs:
       - name: Scan backend diff for non-RE2 regex
         run: |
           echo "Scanning added/modified lines in backend/ for raw regex literals..."
-          grep '^\+' diff.txt | grep -v '^\+\+\+ ' | sed 's/^\+//' > added_lines.txt
+          grep '^+' diff.txt | grep -v '^+++' | sed 's/^\+//' > added_lines.txt
 
           echo "--- Content of added_lines.txt ---"
           cat added_lines.txt
@@ -70,4 +70,4 @@ jobs:
           else
             # No lines matched the raw_regex_pattern at all.
             echo "✅ No raw regex literals found in added/modified backend lines."
-          fi
+          fi