RFR: 8354701: Open source few JToolTip tests [v2]

[Alexander Zvegintsev]

> Few more tests are open sourced:
> 
> - javax/swing/JToolTip/4225314/bug4225314.java manual
> - javax/swing/JToolTip/TooltipTest/TooltipTest.java manual
> - javax/swing/JToolTip/4255441/bug4255441.java manual

Alexander Zvegintsev has updated the pull request incrementally with two additional commits since the last revision:

 - review comments
 - review comments

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Changes:
  - all: https://git.openjdk.org/jdk/pull/24708/files
  - new: https://git.openjdk.org/jdk/pull/24708/files/cdb44bb8..74119df4

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=24708&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=24708&range=00-01

  Stats: 3 lines in 1 file changed: 0 ins; 0 del; 3 mod
  Patch: https://git.openjdk.org/jdk/pull/24708.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/24708/head:pull/24708

PR: https://git.openjdk.org/jdk/pull/24708