RFR: 8292353: TableRow vs. TreeTableRow: inconsistent visuals in cell selection mode [v3]

[Andy Goryachev]

> The issue is caused by TreeTableRow incorrectly selected when cell selection mode is enabled.
> 
> Changes:
> - modified TreeTableRow.updateSelection()

Andy Goryachev has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains four additional commits since the last revision:

 - Merge remote-tracking branch 'origin/master' into 8292353.visuals
 - 8292353: review comments
 - Merge remote-tracking branch 'origin/master' into 8292353.visuals
 - 8292353: update selection

-------------

Changes:
  - all: https://git.openjdk.org/jfx/pull/875/files
  - new: https://git.openjdk.org/jfx/pull/875/files/0b9aadb7..51275937

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jfx&pr=875&range=02
 - incr: https://webrevs.openjdk.org/?repo=jfx&pr=875&range=01-02

  Stats: 16 lines in 1 file changed: 5 ins; 0 del; 11 mod
  Patch: https://git.openjdk.org/jfx/pull/875.diff
  Fetch: git fetch https://git.openjdk.org/jfx pull/875/head:pull/875

PR: https://git.openjdk.org/jfx/pull/875