RFR: 6967482: TAB-key does not work in JTables after selecting details-view in JFileChooser

[Tejesh R]

DetailsView removes JTable TAB, SHIFT-TAB, ENTER and SHIFT-ENTER functionalities to disable navigation within JTable of FilePane in DetailsView. This is causing the issue mentioned in the bug where on invoking DetailsView the functionalities are removed from JTable. I don't see it's effect/significance in disabling the navigation since the focus shifts outside the when TAB is presses and the folder opens when ENTER is pressed without this changed. 
I have tested the fix on CI system, its green.

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Commit messages:
 - Fix + Automatic Test added

Changes: https://git.openjdk.org/jdk/pull/19725/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=19725&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-6967482
  Stats: 174 lines in 2 files changed: 167 ins; 7 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/19725.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/19725/head:pull/19725

PR: https://git.openjdk.org/jdk/pull/19725