ci: shorten integration test job names to just the engine

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: mwc360

.github/workflows/tests.yml

@@ -29,6 +29,7 @@ jobs:
         run: uv run pytest tests/ --ignore=tests/integration -v --tb=short
 
   integration-tests:
+    name: integration (${{ matrix.engine }})
     runs-on: ubuntu-latest
     strategy:
       fail-fast: false