fix(comp:spin): btn under ix-spin can be clicked

[kovsu]

PR Checklist

Please check if your PR fulfills the following requirements:

• The commit message follows our guidelines
• Tests for the changes have been added/updated or not needed
• Docs and demo have been added/updated or not needed

What is the current behavior?

因为 ix-spin 的 pointer-events 属性为 none，所以后面的输入框和按钮都能被操作。所以我们应该给他设置成 auto。

What is the new behavior?

Other information

[cr-gpt]

the review:

The patch looks good, there is no bug risk and the code is syntactically correct. The addition of the pointer-events property ensures that the element can now receive mouse events. This should improve the user experience when interacting with the element.

[idux-bot]

This preview will be available after the AzureCI is passed.

[codecov]

Codecov Report

Merging #1499 (4ec5b29) into main (760b5ac) will decrease coverage by 0.07%.
The diff coverage is 90.88%.

❗ Current head 4ec5b29 differs from pull request most recent head 8e6b45d. Consider uploading reports for the commit 8e6b45d to get more accurate results

@@            Coverage Diff             @@
##             main    #1499      +/-   ##
==========================================
- Coverage   92.81%   92.75%   -0.07%     
==========================================
  Files         327      331       +4     
  Lines       30349    30801     +452     
  Branches     2547     3532     +985     
==========================================
+ Hits        28168    28568     +400     
- Misses       2181     2233      +52     

Impacted Files	Coverage Δ
packages/pro/search/src/ProSearch.tsx	16.35% <15.38%> (+0.86%)	⬆️
packages/cdk/utils/src/dom.ts	78.97% <18.18%> (-8.69%)	⬇️
packages/components/cascader/src/Cascader.tsx	84.68% <63.63%> (-11.39%)	⬇️
packages/components/collapse/src/CollapsePanel.tsx	97.47% <93.75%> (-0.62%)	⬇️
packages/components/desc/src/DescItem.tsx	96.38% <96.38%> (ø)
packages/cdk/utils/src/tree.ts	98.40% <100.00%> (ø)
packages/components/cascader/src/token.ts	100.00% <100.00%> (ø)
packages/components/cascader/src/types.ts	100.00% <100.00%> (ø)
packages/components/checkbox/src/types.ts	100.00% <100.00%> (ø)
packages/components/config/src/defaultConfig.ts	100.00% <100.00%> (ø)
... and 25 more

... and 5 files with indirect coverage changes

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