fix(matrix): label formatter not work

[Justin-ZS]

Brief Information

This pull request is in the type of:

• bug fixing
• new feature
• others

What does this PR do?

Fix matrix label formatter not working.

demo

Fixed issues

• [Bug] 矩阵图matrix.y.label格式化无效？The x and y label formatting of the matrix diagram is invalid? #21403

Details

Before: What was the problem?

matrix.x.label.formatter and matrix.y.label.formatter were ignored.

After: How does it behave after the fixing?

Label formatter now works correctly for matrix axes.

Document Info

• 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

Security Checking

• This PR uses security-sensitive Web APIs.

ZRender Changes

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

Related test cases or examples to use the new APIs

test/matrix-label-formatter.html

Merging options

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

Other information

[echarts-bot]

Thanks for your contribution!
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[github-actions]

The changes brought by this PR can be previewed at: https://echarts.apache.org/examples/editor?version=PR-21410@09c721f