RFR: JDK-8245919: Region#padding property rendering error

Mon Mar 27 23:10:27 UTC 2023

Fix bug in CSS caching code that could reset values on unrelated nodes.

The bug occurs due to a cache entry being constructed incorrectly when the initial node that triggered the cache entry creation has user set values. The calculated values for properties with a user set value were omitted in the cache entry, and other nodes that later share the same entry would incorrectly assume the omitted property was unstyled and were therefore reset to their default values.

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Commit messages:
 - Fix bug in CSS caching code that could reset values on unrelated nodes

Changes: https://git.openjdk.org/jfx/pull/1072/files
 Webrev: https://webrevs.openjdk.org/?repo=jfx&pr=1072&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8245919
  Stats: 95 lines in 2 files changed: 69 ins; 23 del; 3 mod
  Patch: https://git.openjdk.org/jfx/pull/1072.diff
  Fetch: git fetch https://git.openjdk.org/jfx.git pull/1072/head:pull/1072

PR: https://git.openjdk.org/jfx/pull/1072