[jdk21u-dev] RFR: 8343037: Missing @since tag on JColorChooser.showDialog overload

[Satyen Subramaniam]

Backporting JDK-8343037: Missing @since tag on JColorChooser.showDialog overload. Trivial change, adding @since tag. Ran GHA Sanity Checks, local Tier 1 and 2 tests. Patch is clean.

-------------

Commit messages:
 - Backport bd795946e777fccf797b1b69806217f988212f73

Changes: https://git.openjdk.org/jdk21u-dev/pull/1809/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=1809&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8343037
  Stats: 4 lines in 2 files changed: 4 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/1809.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/1809/head:pull/1809

PR: https://git.openjdk.org/jdk21u-dev/pull/1809