- Removes the `cloud/1.54` multiplayer skew.
- Moves directly from 0.2.1 to 0.3.2.
- Focused tests and typecheck pass.

<details><summary>Full context for agent readers</summary>

Backports the multiplayer 0.3.0 adoption from
https://github.com/Comfy-Org/ComfyUI_frontend/pull/18163 and the 0.3.2
promoted-widget fix from
https://github.com/Comfy-Org/ComfyUI_frontend/pull/18270 directly to
`cloud/1.54`, avoiding an obsolete intermediate carrier.

### Changes

- **What**: Pins `@comfyorg/comfy-multi-player` 0.3.2, carries the
current operation-envelope fixture repair, and adds the real-package
`insert_workflow` promoted-widget regression.
- **Dependencies**: `@comfyorg/comfy-multi-player` 0.2.1 → 0.3.2.

### Review focus

Confirm the release branch should move directly to 0.3.2 and retain both
source PRs' regression coverage.

### Verification

- Frozen install and supply-chain policy check passed.
- Focused Vitest: 3 passed.
- `pnpm typecheck` passed.
- Oxfmt and type-aware Oxlint passed on changed files.

Backport of https://github.com/Comfy-Org/ComfyUI_frontend/pull/18163 and
https://github.com/Comfy-Org/ComfyUI_frontend/pull/18270.

</details>