fix: electron-builder race condition creates split draft releases for Mac/Windows

[PriyeshPandey2000]

Problem

Mac and Windows CI jobs run in parallel. Each calls electron-builder --publish always, which creates its own GitHub draft release. Assets end up split:

• Mac job draft: .dmg, .zip, blockmaps, .exe.blockmap
• Windows job draft: .exe, latest.yml

Fix options

1. Add a dedicated publish job that runs after both build jobs, uses --publish never in build jobs then uploads assets in one step
2. Use electron-builder --publish never + gh release upload in a single serialized job
3. Use a matrix build with a post-step that merges

Workaround (current)

Manually delete both drafts, download CI artifacts, create one release via gh release create and upload all assets.