[jfx11u] RFR: 8291087: Wrong position of focus of screen reader on Windows with screen scale > 1

[Kevin Rushforth]

Clean backport. CI build run on all three platforms.

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Commit messages:
 - 8291087: Wrong position of focus of screen reader on Windows with screen scale > 1

Changes: https://git.openjdk.org/jfx11u/pull/121/files
 Webrev: https://webrevs.openjdk.org/?repo=jfx11u&pr=121&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8291087
  Stats: 41 lines in 3 files changed: 33 ins; 0 del; 8 mod
  Patch: https://git.openjdk.org/jfx11u/pull/121.diff
  Fetch: git fetch https://git.openjdk.org/jfx11u pull/121/head:pull/121

PR: https://git.openjdk.org/jfx11u/pull/121