RFR: 8353320: Open source more Swing text tests

[Phil Race]

Swing text related tests being moved to open source.

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Commit messages:
 - 8353320

Changes: https://git.openjdk.org/jdk/pull/24365/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=24365&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8353320
  Stats: 417 lines in 9 files changed: 417 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/24365.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/24365/head:pull/24365

PR: https://git.openjdk.org/jdk/pull/24365