RFR: 8317836: FX nodes embedded in JFXPanel need to track component orientation [v7]

[Prasanta Sadhukhan]

> FX Nodes embedded in a Swing JFXPanel does not track the component orientation and FX nodes remain unaffected when component orientation changes.
> Fix made sure JavaFX scene embedded in a JFXPanel should inherit the value from the JFXPanel.

Prasanta Sadhukhan has updated the pull request incrementally with three additional commits since the last revision:

 - Code update as per review comment
 - Code update as per review comment
 - Code update as per review comment

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Changes:
  - all: https://git.openjdk.org/jfx/pull/1271/files
  - new: https://git.openjdk.org/jfx/pull/1271/files/58d033fe..7a1a1adc

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jfx&pr=1271&range=06
 - incr: https://webrevs.openjdk.org/?repo=jfx&pr=1271&range=05-06

  Stats: 46 lines in 5 files changed: 13 ins; 29 del; 4 mod
  Patch: https://git.openjdk.org/jfx/pull/1271.diff
  Fetch: git fetch https://git.openjdk.org/jfx.git pull/1271/head:pull/1271

PR: https://git.openjdk.org/jfx/pull/1271