[jdk17u-dev] RFR: 8339902: Open source couple TextField related tests

[Goetz Lindenmaier]

I backport this for parity with 17.0.15-oracle.

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Commit messages:
 - Backport fde8508379d2983fa70784faef60699c81f9c359

Changes: https://git.openjdk.org/jdk17u-dev/pull/3126/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=3126&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8339902
  Stats: 527 lines in 5 files changed: 527 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/3126.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev.git pull/3126/head:pull/3126

PR: https://git.openjdk.org/jdk17u-dev/pull/3126