fix: remove docker-warning from test patterns after test deletion

The docker-warning.test.ts file was deleted in this PR (redundant with
no-docker.test.ts), but the test pattern in the CI workflow still
referenced it. Remove the dead pattern to prevent silent test skipping.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: Mossaka

.github/workflows/test-integration-suite.yml

@@ -161,7 +161,7 @@ jobs:
         run: |
           echo "=== Running container & ops tests ==="
           npm run test:integration -- \
-            --testPathPatterns="(container-workdir|docker-warning|environment-variables|error-handling|exit-code-propagation|log-commands|no-docker|volume-mounts)" \
+            --testPathPatterns="(container-workdir|environment-variables|error-handling|exit-code-propagation|log-commands|no-docker|volume-mounts)" \
             --verbose
         env:
           JEST_TIMEOUT: 180000