RFR: 8278119: ProblemList few headful test failing in macosx12-aarch64 system

[Prasanta Sadhukhan]

Few tests are failing on macos12-aarch64 systems due to mismatch in color value obtained from robot.getPixelColor and expected color.
More details on the failures can be seen in JDK-8277816. Till the root cause is investigated, it is better to problemlist it as it causing failures in CI run.

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Commit messages:
 - 8278119: ProblemList few headful test failing in macosx12-aarch64 system
 - 8278119: ProblemList few headful test failing in macosx12-aarch64 system

Changes: https://git.openjdk.java.net/jdk/pull/6663/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=6663&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8278119
  Stats: 10 lines in 1 file changed: 9 ins; 0 del; 1 mod
  Patch: https://git.openjdk.java.net/jdk/pull/6663.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/6663/head:pull/6663

PR: https://git.openjdk.java.net/jdk/pull/6663