Update the lowercasing logic for Greek capital sigma to use the "Final_Sigma" condition. The current implementation still uses the "Final_Cased" condition from Unicode 4.0.
This change also generates the `ConditionalSpecialCasing` entries and Unicode-property predicates from the UCD, replacing manually maintained data that was incomplete and out of date. --------- - [x] I confirm that I make this contribution in accordance with the [OpenJDK Interim AI Policy](https://openjdk.org/legal/ai). ------------- Commit messages: - initial commit Changes: https://git.openjdk.org/jdk/pull/31937/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=31937&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8133167 Stats: 961 lines in 6 files changed: 492 ins; 460 del; 9 mod Patch: https://git.openjdk.org/jdk/pull/31937.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/31937/head:pull/31937 PR: https://git.openjdk.org/jdk/pull/31937
