[jfx17u] RFR: 8299968: Second call to Stage.setScene() create sizing issue with uiScale > 1.0

[Jose Pereda]

Clean backport of 8299968: Second call to Stage.setScene() create sizing issue with uiScale > 1.0

Reviewed-by: kcr, arapte

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Commit messages:
 - 8299968: Second call to Stage.setScene() create sizing issue with uiScale > 1.0

Changes: https://git.openjdk.org/jfx17u/pull/171/files
 Webrev: https://webrevs.openjdk.org/?repo=jfx17u&pr=171&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8299968
  Stats: 251 lines in 8 files changed: 247 ins; 4 del; 0 mod
  Patch: https://git.openjdk.org/jfx17u/pull/171.diff
  Fetch: git fetch https://git.openjdk.org/jfx17u.git pull/171/head:pull/171

PR: https://git.openjdk.org/jfx17u/pull/171