RFR: 8353309: Open source several Swing text tests [v2]

[Phil Race]

> Open source several Swing text / html related regression tests.

Phil Race has updated the pull request incrementally with one additional commit since the last revision:

  8353309

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Changes:
  - all: https://git.openjdk.org/jdk/pull/24364/files
  - new: https://git.openjdk.org/jdk/pull/24364/files/d6293fa6..1a265aa9

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=24364&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=24364&range=00-01

  Stats: 63 lines in 4 files changed: 13 ins; 12 del; 38 mod
  Patch: https://git.openjdk.org/jdk/pull/24364.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/24364/head:pull/24364

PR: https://git.openjdk.org/jdk/pull/24364