Brief Information

This pull request is in the type of:

• bug fixing
• new feature
• others

What does this PR do?

#21081 fixes the case of blur.itemStyle not working.

const pathEmphasisState = symbolPath.ensureState('emphasis');
pathEmphasisState.style = zrUtil.clone(itemHoverStyle);

These lines are not needed any more because it's done in the loop of zrUtil.each(['emphasis', 'select', 'blur'], ....

And this PR also add visual tests for the PR.

Fixed issues

Details

Before: What was the problem?

After: How does it behave after the fixing?

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