Improving the spine preview ui control

[knoxHuang]

Re: #

https://forum.cocos.org/t/topic/163455/36?u=knox

Changelog

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Continuous Integration

This pull request:

• needs automatic test cases check.

  Manual trigger with @cocos-robot run test cases afterward.

• does not change any runtime related code or build configuration

  If any reviewer thinks the CI checks are needed, please uncheck this option, then close and reopen the issue.

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Compatibility Check

This pull request:

• changes public API, and have ensured backward compatibility with deprecated features.
• affects platform compatibility, e.g. system version, browser version, platform sdk version, platform toolchain, language version, hardware compatibility etc.
• affects file structure of the build package or build configuration which requires user project upgrade.
• introduces breaking changes, please list all changes, affected features and the scope of violation.

[github-actions]

✅ Package size is not changed

Interface Check Report

This pull request does not change any public interfaces !

[yoki0805]

It would be great if the Premultiplied Alpha check box could be added.

[knoxHuang]

It would be great if the Premultiplied Alpha check box could be added.

Will be supported in 3.8.6, which is locked down with no new features

[minggo]

Please send to v3.8.6