fix(example): make mnist mp build works

[jialeicui]

Description

Fixes:

• No module found
• gradio Sketchpad component init param breaking change
• duplicate API entry point when sw mp build

Modules

• [ ] UI
• [ ] Controller
• [ ] Agent
• [x] Client
• [ ] Python-SDK
• [ ] Others

Checklist

• [ ] run code format and lint check
• [x] add unit test
• [ ] add necessary doc

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Comparison is base (c3fc2c7) 82.73% compared to head (4937b3f) 91.95%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #3022 +/- ## ============================================ + Coverage 82.73% 91.95% +9.21% ============================================ Files 558 126 -432 Lines 30586 15041 -15545 Branches 1834 0 -1834 ============================================ - Hits 25306 13831 -11475 + Misses 4470 1210 -3260 + Partials 810 0 -810 ``` | [Flag](https://app.codecov.io/gh/star-whale/starwhale/pull/3022/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=star-whale) | Coverage Δ | | |---|---|---| | [console](https://app.codecov.io/gh/star-whale/starwhale/pull/3022/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=star-whale) | `?` | | | [controller](https://app.codecov.io/gh/star-whale/starwhale/pull/3022/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=star-whale) | `?` | | | [standalone](https://app.codecov.io/gh/star-whale/starwhale/pull/3022/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=star-whale) | `91.95% <100.00%> (+<0.01%)` | :arrow_up: | | [unittests](https://app.codecov.io/gh/star-whale/starwhale/pull/3022/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=star-whale) | `91.95% <100.00%> (+0.28%)` | :arrow_up: | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=star-whale#carryforward-flags-in-the-pull-request-comment) to find out more.

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