Follow-up adjustments to the weekly ComfyUI release automation workflow.
## Changes
1. **Rename workflow to follow conventions**
- File: `weekly-comfyui-release.yaml` → `release-weekly-comfyui.yaml`
- Name: "Weekly ComfyUI Release" → "Release: Weekly ComfyUI"
- Matches pattern of other `release-*` workflows
2. **Sync fork with upstream before creating PR**
- Fetches latest upstream/master before making changes
- Ensures PR only shows requirements.txt diff, not stale fork commits
- Does not modify fork's master branch (only pushes automation branch)
## Testing
After merge, can test via manual workflow dispatch in Actions tab.
┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-7060-fix-Weekly-release-workflow-adjustments-2bb6d73d365081008436d1b9e5f7dd65)
by [Unito](https://www.unito.io)