fix(labelLine): fix emphasis.labelLine is not working in pie chart

[shiersansi]

Brief Information

This pull request is in the type of:

• bug fixing
• new feature
• others

What does this PR do?

solved problem:emphasis.labelLine not work in pie chart #19160

Fixed issues

https://github.com/apache/echarts/issues/19160
#19160

Details

Before: What was the problem?

label lines are not hidden when emphasis

After: How does it behave after the fixing?

When I select the blue section,label lines are hidden when emphasis

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 fix the failed test case in the CI and run visual tests of all cases to make sure it doesn't break any changes. Please also note that #18800 was also trying to fix the same problem. The first PR that finds the correct solution will be merged. Thanks!

[github-actions]

The changes brought by this PR can be previewed at: https://echarts.apache.org/examples/editor?version=PR-19180@ce9e51a

[Ovilia]

Please fix the lint problems and this demo also fails.

[shiersansi]

Please fix the lint problems and this demo also fails.

In this section of the code comment, it is mentioned that if label is false, labelLine will not be displayed. So, should we modify it to mean that lableLine will not be affected no matter what the label is

[echarts-bot]

Congratulations! Your PR has been merged. Thanks for your contribution! 👍