in a-table component 'filtered' parameter in filterIcon slot returns wrong value

[rong4188]

• I have searched the issues of this repository and believe that this is not a duplicate.

Version

2.2.8

Environment

chrome 96

Reproduction link

Steps to reproduce

the behavior in document in incorrect as well. the custom filter icon is always blue, we expect it to be blue only when filtered. see document
https://2x.antdv.com/components/table-cn#components-table-demo-custom-filter-panel

What is expected?

return correct value

What is actually happening?

always return true

[tangjinzhou]

doc error update #filterIcon="filtered" to #filterIcon="{filtered}"

[github-actions]

This issue has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.