RFR: 8294158: HTML formatting for PassFailJFrame instructions

Mon Sep 11 13:26:57 UTC 2023

This enhancement provides HTML formatting for instructions in the manual test framework, `PassFailJFrame`.

Some tests could benefit from rich-formatted instructions, especially when the instructions are long.

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Commit messages:
 - Wrap createUI call
 - Revert changes to FileChooserSymLinkTest.java
 - Refactor configuration of a text component for instructions
 - Improve instruction formatting
 - Enable HTML display if instructions start with <html>

Changes: https://git.openjdk.org/jdk/pull/15660/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=15660&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8294158
  Stats: 40 lines in 1 file changed: 35 ins; 0 del; 5 mod
  Patch: https://git.openjdk.org/jdk/pull/15660.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/15660/head:pull/15660

PR: https://git.openjdk.org/jdk/pull/15660