feat(radar): Radar series tooltip support dimensionIndex

[AielloChan]

Brief Information

This pull request is in the type of:

• bug fixing
• new feature
• others

What does this PR do?

Just add dimensionIndex into radar chart series tooltip's callback param.

Fixed issues

#10537

Details

Before: What was the problem?

I just wanna get which axis my cursor is point on. In this example, I wanna get "小明"

After: How does it behave after the fixing?

In radar chart, when cursor point at series symbol area, tooltip callback's params will contain dimensionIndex , which indicate which axis you just pointed.

Document Info

One of the following should be checked.

• This PR doesn't relate to document changes
• The document should be updated later
• The document changes have been made in apache/echarts-doc#xxx

Misc

ZRender Changes

• This PR depends on ZRender changes (ecomfe/zrender#xxx).

Related test cases or examples to use the new APIs

N.A.

Others

Merging options

• Please squash the commits into a single one when merging.

Other information

[echarts-bot]

Thanks for your contribution!
The community will review it ASAP. In the meanwhile, please checkout the coding standard and Wiki about How to make a pull request.

[Ovilia]

Please don't use forced pushes because it makes it hard to trace the data changes.

[AielloChan]

Please don't use forced pushes because it makes it hard to trace the data changes.

Oh, I just force write my init uncompleted commit, will not force push further.

[AielloChan]

@Ovilia Hello, please review my code, thx

[github-actions]

The changes brought by this PR can be previewed at: https://echarts.apache.org/examples/editor?version=PR-20677@460fe5e