[jfx21u] RFR: 8311185: VirtualFlow jump when cellcount changes

[Jose Pereda]

Clean backport of 8311185: VirtualFlow jump when cellcount changes
Reviewed-by: angorya, kcr

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Commit messages:
 - 8311185: VirtualFlow jump when cellcount changes

Changes: https://git.openjdk.org/jfx21u/pull/31/files
 Webrev: https://webrevs.openjdk.org/?repo=jfx21u&pr=31&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8311185
  Stats: 19 lines in 2 files changed: 19 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jfx21u/pull/31.diff
  Fetch: git fetch https://git.openjdk.org/jfx21u.git pull/31/head:pull/31

PR: https://git.openjdk.org/jfx21u/pull/31