Add step to terminate Chrome processes in UI test workflow

This ensures no lingering Chrome or Chromium processes interfere with test execution, improving reliability. The step is added both before and during test execution for Ubuntu environments.

Author: VitaliyBoyko

.github/workflows/uitests.yml

@@ -57,6 +57,13 @@ jobs:
           max-attempts: 15
           retry-delay: 30s
 
+      # Kill any running Chrome processes
+      - name: Kill Chrome Processes
+        run: |
+          pkill -f chrome || true
+          pkill -f chromium || true
+          echo "Chrome processes killed"
+
       # Run tests
       - name: Tests
         if: matrix.os != 'ubuntu-latest'
@@ -66,6 +73,8 @@ jobs:
         if: matrix.os == 'ubuntu-latest'
         run: |
           export DISPLAY=:99.0
+          pkill -f chrome || true
+          pkill -f chromium || true
           ./gradlew test -PexcludeTests="**/reference/**,**/linemarker/**,**/inspections/**,**/completion/**,**/actions/**"
 
 # Uncomment if investigation is needed: