Update ui-renderer.ts , 将 setEntityColorDirty() 方法 改为 protected

[finscn]

有时候子类里会用到.

Re: #

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]

Code Size Check Report

Wechat (WASM)	Before	After	Diff
2D Empty (legacy pipeline)	1009728 bytes	1009779 bytes	⚠️ +51 bytes
2D All (legacy pipeline)	2675104 bytes	2675155 bytes	⚠️ +51 bytes
2D All (new pipeline)	2766746 bytes	2766797 bytes	⚠️ +51 bytes
(2D + 3D) All	10023716 bytes	10023767 bytes	⚠️ +51 bytes

Web (WASM + ASMJS)	Before	After	Diff
(2D + 3D) All	16842778 bytes	16842829 bytes	⚠️ +51 bytes

Interface Check Report

! WARNING this pull request has changed these public interfaces:

@@ -1459,8 +1459,9 @@
         protected _postRender(render: __private._cocos_2d_renderer_i_batcher__IBatcher): void;
         protected _canRender(): boolean;
         protected _postCanRender(): void;
         protected _updateColor(): void;
+        protected setEntityColorDirty(dirty: boolean): void;
         /**
          * @deprecated Since v3.7.0, this is an engine private interface that will be removed in the future.
          */
         setEntityColor(color: math.Color): void;