RFR: 8195675: Call to insertText with single character from custom Input Method ignored

[Steven Loomis]

8195675: Call to insertText with single character from custom Input Method ignored

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Commit messages:
 - 8195675: Update AWTView.m
 - 8195675: [MacOS] fix Keyman input methods on mac

Changes: https://git.openjdk.org/jdk/pull/17921/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=17921&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8195675
  Stats: 5 lines in 1 file changed: 3 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/17921.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/17921/head:pull/17921

PR: https://git.openjdk.org/jdk/pull/17921