[jdk21u-dev] RFR: 8353309: Open source several Swing text tests

Fri Sep 12 00:01:46 UTC 2025

Backporting JDK-8353309: Open source several Swing text tests. Adds five swing text related tests. Ran GHA Sanity Checks, local Tier 1 and 2, and new tests directly. Patch is not clean, but trivial fix: there's a typo in one of the tests addressed by [JDK-8359418](https://bugs.openjdk.org/browse/JDK-8359418) that I've included here. Backporting for parity with Oracle.

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Commit messages:
 - Backport 8c760e78b9e3851d40f8036105666e9c451b09a1
 - Backport 31a6de2e743923c92e976d5f5536120736d56029

Changes: https://git.openjdk.org/jdk21u-dev/pull/2200/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=2200&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8353309
  Stats: 532 lines in 13 files changed: 531 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/2200.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/2200/head:pull/2200

PR: https://git.openjdk.org/jdk21u-dev/pull/2200