[jfx21u] RFR: 8334874: Horizontal scroll events from touch pads should scroll the TabPane tabs

[Johan Vos]

Almost clean backport of JDK-8334874: Horizontal scroll events from touch pads should scroll the TabPane tabs
The only change was the (c) date that had changed.

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Commit messages:
 - 8334874: Horizontal scroll events from touch pads should scroll the TabPane tabs

Changes: https://git.openjdk.org/jfx21u/pull/64/files
  Webrev: https://webrevs.openjdk.org/?repo=jfx21u&pr=64&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8334874
  Stats: 111 lines in 2 files changed: 107 ins; 0 del; 4 mod
  Patch: https://git.openjdk.org/jfx21u/pull/64.diff
  Fetch: git fetch https://git.openjdk.org/jfx21u.git pull/64/head:pull/64

PR: https://git.openjdk.org/jfx21u/pull/64