RFR: 8318200: String::newStringNoRepl and String::getBytesNoRepl does not throw CharacterCodingException

[Shaojin Wen]

When calling String::newStringNoRepl and String::getBytesNoRepl, we need to use try...catch to handle CharacterCodingException and throw IllegalArgumentException instead of CharacterCodingException to make the calling code cleaner.

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Commit messages:
 - Make the NoRepl methods throw IllegalArgument

Changes: https://git.openjdk.org/jdk/pull/16209/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=16209&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8318200
  Stats: 93 lines in 8 files changed: 10 ins; 58 del; 25 mod
  Patch: https://git.openjdk.org/jdk/pull/16209.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/16209/head:pull/16209

PR: https://git.openjdk.org/jdk/pull/16209