For Android builds: Set NDK version via ndkVersion and upgrade Gradle + plugins.

[bofeng-song]

Re: #
https://github.com/cocos/3d-tasks/issues/18585
https://github.com/cocos/3d-tasks/issues/18993
https://github.com/cocos/3d-tasks/issues/18959
#17702

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)	1009738 bytes	1009738 bytes	✅ 0 bytes
2D All (legacy pipeline)	2675297 bytes	2675367 bytes	⚠️ +70 bytes
2D All (new pipeline)	2767033 bytes	2767103 bytes	⚠️ +70 bytes
(2D + 3D) All	10024031 bytes	10024101 bytes	⚠️ +70 bytes

Web (WASM + ASMJS)	Before	After	Diff
(2D + 3D) All	16843093 bytes	16843163 bytes	⚠️ +70 bytes

Interface Check Report

! WARNING this pull request has changed these public interfaces:

@@ -53442,9 +53442,9 @@
             };
             paused: boolean;
             protected _enumSkins: __private._cocos_core_value_types_enum__EnumType;
             protected _enumAnimations: __private._cocos_core_value_types_enum__EnumType;
-            protected attachUtil: __private._cocos_spine_attach_util__AttachUtil;
+            protected attachUtil: __private._cocos_spine_attach_util__AttachUtil | null;
             protected _socketNodes: Map<number, Node>;
             protected _cachedSockets: Map<string, number>;
             protected _paused: boolean;
             protected _accTime: number;