RFR: 8341370: Test java/awt/Frame/ShapeNotSetSometimes/ShapeNotSetSometimes.java fails intermittently on macOS-aarch64

[Manukumar V S]

ShapeNotSetSometimes.java fails intermittently with a RuntimeException on macOS-aarch64
Test threw exception: java.lang.RuntimeException: Test failed. The shape has not been applied.

Fix:
The test has been modified to take a screenshot of the area and then analyse the pixel color in the screenshot rather than getting individual pixels from the screen for each test.
Also the timeout of the test has been increased to 5 minutes(300 seconds) as sometimes it times out with the default timeout of 2 minutes(120 seconds).

Testing:
After fixing the test, it has been run 40 times per platform(Windows, Linux, MacOS x64 and MacOS aarch64) using Mach5 and got 100% pass rate .

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Commit messages:
 - 8341370: Test java/awt/Frame/ShapeNotSetSometimes/ShapeNotSetSometimes.java fails intermittently on macOS-aarch64

Changes: https://git.openjdk.org/jdk/pull/25354/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=25354&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8341370
  Stats: 14 lines in 2 files changed: 3 ins; 5 del; 6 mod
  Patch: https://git.openjdk.org/jdk/pull/25354.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/25354/head:pull/25354

PR: https://git.openjdk.org/jdk/pull/25354