fix: prevent duplicate workflow runs for PRs

Remove 8-scheduled-job from push triggers to avoid running the build
workflow twice when creating PRs from that branch. The workflow will
still run on all PRs via the pull_request trigger.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

Author: leogdion

.github/workflows/bushel-cloud-build.yml

@@ -5,12 +5,11 @@ on:
   push:
     branches:
       - main
-      - 8-scheduled-job  # For development/testing
 
   # Allow manual trigger
   workflow_dispatch:
 
-  # Optional: Build on PRs for validation
+  # Build on PRs for validation
   pull_request:
 
 # Prevent concurrent builds