RFR: 8360462: [macosx] row selection not working with Ctrl+Shift+Down/Up in AquaL&F [v4]

[Prasanta Sadhukhan]

> Ctrl+Shift+Down/Up does extend row selection down or up in Aqua L&F as it does in native tree view in Finder.
> Fixed the keybindings.

Prasanta Sadhukhan has updated the pull request incrementally with one additional commit since the last revision:

  Test modification

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Changes:
  - all: https://git.openjdk.org/jdk/pull/25966/files
  - new: https://git.openjdk.org/jdk/pull/25966/files/c6aa70bd..11b61fac

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=25966&range=03
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=25966&range=02-03

  Stats: 13 lines in 1 file changed: 8 ins; 0 del; 5 mod
  Patch: https://git.openjdk.org/jdk/pull/25966.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/25966/head:pull/25966

PR: https://git.openjdk.org/jdk/pull/25966