RFR: 8264102: JTable Keyboards Navigation differs with Test Instructions. [v6]

[Tejesh R]

> Updated the actions for "ctrl shift DOWN" to "`selectLastRowExtendSelection`" and  "ctrl shift UP", "`selectFirstRowExtendSelection`" in Basic and other Look and feel. Tested in CI and no regressions found. 
> Test to be used - [javax/swing/JTable/KeyBoardNavigation/KeyBoardNavigation.java](https://github.com/openjdk/jdk/blob/master/test/jdk/javax/swing/JTable/KeyBoardNavigation/KeyBoardNavigation.java)

Tejesh R has updated the pull request incrementally with one additional commit since the last revision:

  Updated review comments

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Changes:
  - all: https://git.openjdk.org/jdk/pull/17236/files
  - new: https://git.openjdk.org/jdk/pull/17236/files/578d14b0..a97fd6d7

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=17236&range=05
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=17236&range=04-05

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/17236.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/17236/head:pull/17236

PR: https://git.openjdk.org/jdk/pull/17236