BUG - Fix coverage workflow triggers (#1996)

When trying to cut the release candidate for the theme, the
`check_coverage` workflow failed; however, this is not meant to run on
`release` type events.

This PR fixes the syntax so that `releases, schedules, and
workflow_call` type events are properly skipped.

Ref:
https://github.com/pydata/pydata-sphinx-theme/actions/runs/11104806255/job/30850177121

.github/workflows/CI.yml

@@ -176,7 +176,7 @@ jobs:
     needs: run-pytest
     runs-on: ubuntu-latest
     # avoid running this on schedule, releases, or workflow_call
-    if: github.event.workflow_run.event != 'schedule' && github.event.workflow_run.event != 'release' && github.event.workflow_run.event != 'workflow_call'
+    if: github.event_name != 'schedule' && github.event_name != 'release' && github.event_name != 'workflow_call'
     permissions:
       contents: write
       pull-requests: write

docs/_static/switcher.json

@@ -34,4 +34,4 @@
     "version": "v0.11.0",
     "url": "https://pydata-sphinx-theme.readthedocs.io/en/v0.11.0/"
   }
-]
+]