Fix `HKSCS` encoder to correctly set the replacement character, and add tests to verify the `CodingErrorAction.REPLACE` behavior of all available encoders.
------------- Commit messages: - Add test to verify `CodingErrorAction.REPLACE` for all charsets - Fix incorrect `HKSCS::repl` override Changes: https://git.openjdk.org/jdk/pull/26635/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=26635&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8364365 Stats: 483 lines in 3 files changed: 472 ins; 9 del; 2 mod Patch: https://git.openjdk.org/jdk/pull/26635.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/26635/head:pull/26635 PR: https://git.openjdk.org/jdk/pull/26635
