Skip paths-filter for workflow_dispatch events

The dorny/paths-filter action requires a 'before' field in the event
payload, which doesn't exist for workflow_dispatch. Skip it since
manual dispatch handles matrix setup independently.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: HackingGate

.github/workflows/test_typst_out_action.yml

@@ -55,6 +55,7 @@ jobs:
           fetch-depth: 0
 
       - name: Check for workflow changes
+        if: github.event_name != 'workflow_dispatch'
         uses: dorny/paths-filter@v3
         id: filter
         with: