RFR: 8356439: Rename JavaLangAccess::*NoRepl methods

[Volkan Yazici]

`NoRepl`-suffixed `String` methods denote methods that do not replace invalid characters, but throw `CharacterCodingException` on encounter. This behavior cannot easily be derived from the method footprints, has been a source of confusion for maintainers, and is not uniformly adopted, e.g., `newStringUTF8NoRepl()` and `getBytesUTF8NoRepl()` does *not* throw `CCE`. This PR removes `NoRepl` suffix from method names and consistently uses `throws CCE` in method footprints. (b4845109e18 passes `tier1,2`.)

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Commit messages:
 - Replace `requireNonNull` with implicit null checks
 - Merge remote-tracking branch 'upstream/master' into jlaNoRepl
 - Improve docs of touched methods and add NPE checks
 - Convert IAE-throwing methods into CCE-throwing ones
 - Rename `JavaLangAccess::*NoRepl` methods

Changes: https://git.openjdk.org/jdk/pull/26413/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=26413&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8356439
  Stats: 193 lines in 10 files changed: 82 ins; 34 del; 77 mod
  Patch: https://git.openjdk.org/jdk/pull/26413.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/26413/head:pull/26413

PR: https://git.openjdk.org/jdk/pull/26413