RichText wrap the wrong line

[tangkaikk]

Re: #

Changelog

---

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.

---

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]

Code Size Check Report

Wechat (WASM)	Before	After	Diff
2D Empty (legacy pipeline)	1009805 bytes	1009805 bytes	✅ 0 bytes
2D All (legacy pipeline)	2675364 bytes	2675285 bytes	👍 -79 bytes
2D All (new pipeline)	2767100 bytes	2767021 bytes	👍 -79 bytes
(2D + 3D) All	10024070 bytes	10023991 bytes	👍 -79 bytes

Web (WASM + ASMJS)	Before	After	Diff
(2D + 3D) All	16843132 bytes	16843053 bytes	👍 -79 bytes

Interface Check Report

This pull request does not change any public interfaces !

[star-e]

@cocos-robot run test cases

[star-e]

What about the rest of the multilineTexts? Some texts are skipped.

[tangkaikk]

Have corrected this situation.

[github-actions]

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

• Test Platform: PR-Test
• Editor Version: v3.8.8
• Task Result: FAIL
• Task URL: https://cctest.cocos.org/#/reportview/PR-TEST/748c7b93-266c-404e-9080-ef0fe13fdfd5/-1
• GitHub Action: https://github.com/cocos/cocos-engine/actions/runs/18753717884

Task Details

Platform	build	boot	runned	crashScene	FailScene
web-mobile	PASS	PASS	FAIL		rich-text-long-string-truncation
ios	PASS	PASS	FAIL		rich-text-long-string-truncation
mac	PASS	PASS	FAIL		rich-text-long-string-truncation

[github-actions]

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

• Test Platform: PR-Test
• Editor Version: v3.8.8
• Task Result: FAIL
• Task URL: https://cctest.cocos.org/#/reportview/PR-TEST/bc46ac5a-b1ae-47e8-8eb7-2b75a3f021a0/-1
• GitHub Action: https://github.com/cocos/cocos-engine/actions/runs/18753717884

Task Details

Platform	build	boot	runned	crashScene	FailScene
windows	PASS	PASS	FAIL		rich-text-long-string-truncation
android	PASS	PASS	FAIL		rich-text-long-string-truncation
wechatgame	PASS	PASS	FAIL		rich-text-long-string-truncation

[star-e]

@cocos-robot run test cases