chore(ci): make it clear that PR policy is for packages/ (#9025)

chore(ci): make it clear that PR policy applies to versioned pkgs only

Signed-off-by: Aviv Keller <me@aviv.sh>

Author: avivkeller

.github/workflows/pull-request-policy.yml

@@ -10,6 +10,8 @@ on:
   pull_request:
     branches:
       - main
+    paths:
+      - packages/**
     types: [opened, edited, synchronize, reopened, ready_for_review]
 
 permissions: