[jdk11u-dev] RFR: 8253980: javax/swing/plaf/synth/7158712/bug7158712.java fails on windows

[Amos Shi]

Backport of [JDK-8253980](https://bugs.openjdk.org/browse/JDK-8253980)
- This PR contains two commits
- Commit 1: is a de facto  clean back port of original commit
  - `bug7158712.java` is a **clean** `git apply`
  - `ProblemList.txt` is a manual change based on original commit, can be `considered as clean`
- Commit 2
  - A line `popup.show()` has been added to avoid the test case failure with message: 
    - **IllegalComponentStateException: component must be showing on the screen to determine its location**

Testing
- Local: Test passed
  - `bug7158712.java`: Test results: passed: 1
- Pipeline: 
- Testing Machine:

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

Commit messages:
 - IllegalComponentStateException: component must be showing on the screen to determine its location
 - Backport bdd5782a67ac4b72a7dab5ea6eee3b38a864ffbf

Changes: https://git.openjdk.org/jdk11u-dev/pull/2688/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=2688&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8253980
  Stats: 15 lines in 2 files changed: 8 ins; 1 del; 6 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/2688.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev.git pull/2688/head:pull/2688

PR: https://git.openjdk.org/jdk11u-dev/pull/2688