RFR: 8354248: Open source several AWT GridBagLayout and List tests [v6]

[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
> 
> ComponentShortage.java test fails in Windows and linux after converting to main based. On investigation its found that the test was not running through jtreg, it failed to run with this error - 
> `Error: Not a test or directory containing tests: java/awt/GridBagLayout/ComponentShortage/ComponentShortage.html
> `
> Hence it was gone unnoticed without been problem listed.
> I've created a new JBS for this issue since it needs further investigation - [JDK-8355280](https://bugs.openjdk.org/browse/JDK-8355280) .

Tejesh R has updated the pull request incrementally with one additional commit since the last revision:

  Update PL

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/24749/files
  - new: https://git.openjdk.org/jdk/pull/24749/files/f4d1b134..d8e3c951

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=24749&range=05
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=24749&range=04-05

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 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