fix(tooltip): Changing tooltip trigger from axis to item doesn't refresh the displayed tooltip

[Justin-ZS]

Brief Information

This pull request is in the type of:

• bug fixing
• new feature
• others

What does this PR do?

fix: Changing tooltip trigger from axis to item doesn't refresh the displayed tooltip

Fixed issues

#20706

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

[echarts-bot]

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[Justin-ZS]

@Ovilia @100pah
Could you help to review the PR? Thanks!

[Ovilia]

@Ovilia @100pah Could you help to review the PR? Thanks!

Sure. I'm going to review more PRs every day recently.

[github-actions]

The changes brought by this PR can be previewed at: https://echarts.apache.org/examples/editor?version=PR-20710@d6b12d2

[Ovilia]

Can you explain why this action should only be dispatched for axis triggers?

[Justin-ZS]

I found this action causes the emphasis state lost.
After dispatch:

Expected:

Maybe dispatch this action only when axisPointer is enabled would be better.
Is there any way to check if axisPointer is enabled or not?