do not run workflow on forks

Author: emilykl

.github/workflows/upload-dev-build.yml

@@ -23,7 +23,9 @@ jobs:
           (
             github.event_name == 'workflow_run' && 
             github.event.workflow_run.event == 'pull_request' &&
-            github.event.workflow_run.conclusion == 'success'
+            github.event.workflow_run.conclusion == 'success' &&
+            # Only trigger for branches in the main repo, not forks
+            github.event.workflow_run.head_repository.full_name == github.repository
           )
     steps:
       - name: Get required metadata (PR number, commit SHA, workflow run ID containing artifacts)
@@ -49,7 +51,7 @@ jobs:
             exit 1
           fi
 
-          # If PR_NUM is empty (this is the case for forks) get PR number using SHA
+          # If PR_NUM is empty, get PR number using SHA
           if [ -z "${PR_NUM}" ]; then
             PR_NUM=$(gh pr list --search "sha:${SHA}" --state open --json number --jq '.[0].number')
           fi