fixed #18123: Fix spine with UIOpacity 0 will be displayed at first frame.

[dumganhar]

Re: #18123

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.

[dumganhar]

@cocos-robot run test cases

[github-actions]

Code Size Check Report

Wechat (WASM)	Before	After	Diff
2D Empty (legacy pipeline)	1006139 bytes	1006156 bytes	⚠️ +17 bytes
2D All (legacy pipeline)	2669478 bytes	2669495 bytes	⚠️ +17 bytes
2D All (new pipeline)	2757686 bytes	2757703 bytes	⚠️ +17 bytes
(2D + 3D) All	10011275 bytes	10011292 bytes	⚠️ +17 bytes

Web (WASM + ASMJS)	Before	After	Diff
(2D + 3D) All	16927398 bytes	16927415 bytes	⚠️ +17 bytes

Interface Check Report

This pull request does not change any public interfaces !

[github-actions]

@dumganhar, Please check the result of run test cases:

• Test Platform: PR-Test
• Editor Version: v3.8.7
• Task Result: PASS
• Task URL: https://cctest.cocos.org/#/reportview/PR-TEST/7af606e9-b9d8-491c-aee2-25b4c430754b/-1
• GitHub Action: https://github.com/cocos/cocos-engine/actions/runs/14518775732

Task Details

[github-actions]

@dumganhar, Please check the result of run test cases:

• Test Platform: PR-Test
• Editor Version: v3.8.7
• Task Result: PASS
• Task URL: https://cctest.cocos.org/#/reportview/PR-TEST/904cb5aa-825d-415c-8e53-b5749f419e37/-1
• GitHub Action: https://github.com/cocos/cocos-engine/actions/runs/14518775732

Task Details