修复使用TypeScript时Modal onPresss方法缺乏参数定义

[helloworldchao]

First of all, thank you for your contribution! :-)

Please makes sure that these checkboxes are checked before submitting your PR, thank you!

• Make sure that you follow antd's code convention.
• Run npm run lint and fix those errors before submitting in order to keep consistent code style.
• Rebase before creating a PR to keep commit history clear.
• Add some descriptions and refer relative issues for you PR.

Extra checklist:

if isBugFix :

elif isNewFeature :

• Update API docs for the component.
• Update/Add demo to demonstrate new feature.
• Make sure that you add at least one unit test for the bug which you had fixed.
• Update TypeScript definition for the component.
• Add unit tests for the feature.

---

This change is 

[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (master@a458576). Click here to learn what that means.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master    #3136   +/-   ##
=========================================
  Coverage          ?   60.05%           
=========================================
  Files             ?       92           
  Lines             ?     2278           
  Branches          ?      654           
=========================================
  Hits              ?     1368           
  Misses            ?      901           
  Partials          ?        9

Flag	Coverage Δ
#web	60.05% <ø> (?)

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update a458576...63a975e. Read the comment docs.

[doxiaodong]

There's no param in onPress callback, see https://github.com/ant-design/ant-design-mobile/blob/master/components/modal/Modal.tsx#L76

[helloworldchao]

The Modal.prompt use the same CallbackOrActions on PropsType when onPress, and it may have param in onPress callback, see https://github.com/ant-design/ant-design-mobile/blob/482bd8e56cd33a6f0f8c24bfc1847a0fbf8134b9/components/modal/prompt.tsx#L157 @doxiaodong

[helloworldchao]

Sorry, the link is error, here is the right link

ant-design-mobile/components/modal/prompt.tsx

Line 157 in 482bd8e

return callback(...callbackArgs);

@doxiaodong

[doxiaodong]