RFR: 8317771 [macos14] Expand/collapse a JTree using keyboard freezes the application in macOS 14 Sonoma

[Artem Semenov]

NSAccessibility Outline is an accessibility representation of trees.
This representation requires that the visible children be represented as a flat array.
The child linearization algorithm available in ```CAccessibility.getChildrenAndRolesRecursive()``` is universal, i.e. suitable for any object with the role of a tree, but is not efficient, since it traverses the entire tree and selects suitable children.
For JTree, this algorithm can be optimized by using TreePath, but the old algorithm will have to be retained to maintain versatility.

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Commit messages:
 -     8317771 [macos14] Expand/collapse a JTree using keyboard freezes the application in macOS 14 Sonoma

Changes: https://git.openjdk.org/jdk/pull/17165/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=17165&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8317771
  Stats: 65 lines in 1 file changed: 64 ins; 1 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/17165.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/17165/head:pull/17165

PR: https://git.openjdk.org/jdk/pull/17165