chore: publish wasm snapshots from main

Co-authored-by: OpenCode <noreply@opencode.ai>

Author: hi-ogawa

.github/workflows/pkg-pr-new.yml

@@ -2,6 +2,9 @@ name: pkg.pr.new
 
 on:
   pull_request:
+  push:
+    branches:
+      - main
 
 concurrency:
   group: pkg-pr-new-${{ github.event.pull_request.number }}