fix: workspace glob + lockfile importer keys for packages/triggers/

#1758 moved the trigger packages but this pair missed the commit (the
staging command silently failed on a stale path): without the
packages/triggers/* workspace glob the moved packages aren't workspace
members at all, and the lockfile still keys their importers under
packages/plugins/. Frozen-lockfile installs fail without this.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

Author: os-zhuang

pnpm-lock.yaml

@@ -1,6 +1,7 @@
 packages:
   - packages/*
   - packages/plugins/*
+  - packages/triggers/*
   - packages/services/*
   - packages/adapters/*
   - packages/connectors/*