[jdk11u-dev] RFR: 8306067: Open source AWT Graphics, GridBagLayout related tests [v2]

[Amos Shi]

> Backport of [JDK-8306067](https://bugs.openjdk.org/browse/JDK-8306067) and [JDK-8306838](https://bugs.openjdk.org/browse/JDK-8306838)
> 
> 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: **All checks have passed**
> - Testing Machine: SAP nightlies `GetGraphicsTest.java` failed on `2024-04-16,17,19,20`

Amos Shi has updated the pull request incrementally with one additional commit since the last revision:

  Backport 07ea445b43e0df682f305c8709495094e807b1f8

-------------

Changes:
  - all: https://git.openjdk.org/jdk11u-dev/pull/2653/files
  - new: https://git.openjdk.org/jdk11u-dev/pull/2653/files/9ac07a6b..f0703f20

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=2653&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=2653&range=00-01

  Stats: 1 line in 1 file changed: 1 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