add methods for batch updating sibling indices for issue #17644 .

[coldcloude]

Re: #17644

Changelog

• Add methods for batch updating sibling indices.

---

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]

Interface Check Report

! WARNING this pull request has changed these public interfaces:

@@ -24539,8 +24539,32 @@
          * @zh 新的兄弟节点索引值。如果该值等于 -1 或者大于等于兄弟节点数量，那么该节点将会被插到兄弟节点数组的尾部。
          */
         setSiblingIndex(index: number): void;
         /**
+         * @en Batch update the children's sibling index to the index of in children, and
+         * returns the sibling indices of the updated children.
+         * @zh 批量更新当前节点子节点的sibling index为其在children数组中的下标，返回更新的节点下标。
+         * @return @en The sibling indices of the updated children.
+         * @zh 已更新的子节点的sibling index。
+         */
+        protected fixSiblingChanges(): number[];
+        /**
+         * @en Emit children's sibling indices change events.
+         * @zh 批量并触发节点sibling index更新事件。
+         * @param changed @en The sibling indices of the updated children.
+         * @zh 已更新的子节点的sibling index。
+         */
+        protected emitSiblingIndicesChanges(changed: number[]): void;
+        /**
+         * @en Sort children and batch update sibling indices and emit update events.
+         * @zh 对当前节点的子节点排序，并批量更新sibling index及触发变更事件
+         * @param sort @en A sort function to sort the nodes.
+         * @zh 用于将节点排序的方法。
+         * @return @en The sibling indices of the updated children.
+         * @zh 已更新的子节点的sibling index。
+         */
+        sortChildren(sort: (ns: Node[]) => void): number[];
+        /**
          * @en Walk though the sub children tree of the current node.
          * Each node, including the current node, in the sub tree will be visited two times,
          * before all children and after all children.
          * This function call is not recursive, it's based on stack.