[jdk11u-dev] RFR: 8272602: [macos] not all KEY_PRESSED events sent when control modifier is used

[Vladimir Kempik]

Clean backport to jdk11u-dev

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Commit messages:
 - Backport ddcd851c43aa97477c7e406490c0c7c7d71ac629

Changes: https://git.openjdk.java.net/jdk11u-dev/pull/264/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk11u-dev&pr=264&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8272602
  Stats: 110 lines in 2 files changed: 108 ins; 1 del; 1 mod
  Patch: https://git.openjdk.java.net/jdk11u-dev/pull/264.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk11u-dev pull/264/head:pull/264

PR: https://git.openjdk.java.net/jdk11u-dev/pull/264