RFR: 8354248: Open source several AWT GridBagLayout and List tests

[Tejesh R]

Open source these AWT GridBagLayout and List tests:

java/awt/GridBagLayout/ComponentShortage/ComponentShortage.java
java/awt/List/ListScrollbarCursorTest/ListScrollbarCursorTest.java
java/awt/List/ListScrollbarTest/ListScrollbarTest.java

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Commit messages:
 - Open source

Changes: https://git.openjdk.org/jdk/pull/24749/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=24749&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8354248
  Stats: 363 lines in 4 files changed: 363 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/24749.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/24749/head:pull/24749

PR: https://git.openjdk.org/jdk/pull/24749