[jfx17u] RFR: 8306447: Adding an element to a long existing list may cause the first visible element to jump

[Jose Pereda]

Clean backport of 8306447: Adding an element to a long existing list may cause the first visible element to jump
Reviewed-by: angorya, kcr

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Commit messages:
 - 8306447: Adding an element to a long existing list may cause the first visible element to jump

Changes: https://git.openjdk.org/jfx17u/pull/157/files
 Webrev: https://webrevs.openjdk.org/?repo=jfx17u&pr=157&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8306447
  Stats: 62 lines in 2 files changed: 56 ins; 1 del; 5 mod
  Patch: https://git.openjdk.org/jfx17u/pull/157.diff
  Fetch: git fetch https://git.openjdk.org/jfx17u.git pull/157/head:pull/157

PR: https://git.openjdk.org/jfx17u/pull/157