[jdk11u-dev] RFR: 8306067: Open source AWT Graphics,GridBagLayout related tests

[Amos Shi]

Backport of [JDK-8306067](https://bugs.openjdk.org/browse/JDK-8306067)

Testing
- Local: Test passed, on MacOS 14.4.1
  - `DrawNullStringTest.java`: Test results: passed: 1
  - `GetGraphicsTest.java`: Test results: passed: 1
  - `GridBagLayoutButtonsOverlapTest.java`: Test results: passed: 1
  - `GridBagLayoutOutOfBoundsTest.java`: Test results: passed: 1
- Pipeline: 
- Testing Machine:

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Commit messages:
 - Backport d53a5eed0f64d97e1f688ed4cde006ae2a676231

Changes: https://git.openjdk.org/jdk11u-dev/pull/2653/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=2653&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8306067
  Stats: 299 lines in 4 files changed: 299 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/2653.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev.git pull/2653/head:pull/2653

PR: https://git.openjdk.org/jdk11u-dev/pull/2653