Add prek hook to enforce HTTPException is imported from fastapi (#67367)

* Add prek hook to enforce HTTPException is imported from fastapi

* Move HTTPException-import hook into per-distribution prek configs

Splits the single root-level hook entry into per-distribution
`.pre-commit-config.yaml` files (airflow-core, providers/amazon,
providers/common/ai, providers/edge3, providers/fab,
providers/keycloak). Each entry is scoped to the subtree that actually
wires a FastAPI app, so edge3's `cli/` (client) is excluded and only
`worker_api/` and `plugins/` are checked.

Also fixes a latent bug the hook caught in
`airflow-core/src/airflow/api_fastapi/core_api/routes/ui/dags.py`,
where `HTTPException` was imported from `http.client` and called
with FastAPI's `(status_code, detail)` signature -- the route would
return 500 instead of the intended 400 for `dag_id == "~"`.

* Cover serve_logs FastAPI app and add unit tests for the import-guard hook

Widens the ``airflow-core`` hook scope to ``src/airflow/utils/serve_logs/``
(and its test file) so the worker log-serving FastAPI app -- which raises
``HTTPException`` in ~10 places but lives outside ``api_fastapi/`` -- is
also guarded against ``starlette.exceptions`` / ``http.client`` imports
of ``HTTPException``.

Adds parametrized unit tests at ``scripts/tests/ci/prek/test_check_http_exception_import_from_fastapi.py``
covering plain, aliased, and dotted (``fastapi.exceptions``) good
imports, ``starlette.exceptions`` / ``http.client`` violations,
aliased violations, and graceful handling of syntax errors and
missing files.