[jdk21u] Integrated: 8316025: Use testUI() method of PassFailJFrame.Builder in FileChooserSymLinkTest.java

[Alexey Ivanov]

Backports an example of using `Builder.testUI` method in `PassFailJFrame`.

This is a clean backport. It depends on [JDK-8294156](https://bugs.openjdk.org/browse/JDK-8294156) being already integrated, see #385 as well as [JDK-8316003](https://bugs.openjdk.org/browse/JDK-8316003) in #353.

-------------

Commit messages:
 - Backport 7f47c51aced9c724dbc9b0d8cbd88c49435da460

Changes: https://git.openjdk.org/jdk21u/pull/386/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk21u&pr=386&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8316025
  Stats: 123 lines in 1 file changed: 53 ins; 60 del; 10 mod
  Patch: https://git.openjdk.org/jdk21u/pull/386.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u.git pull/386/head:pull/386

PR: https://git.openjdk.org/jdk21u/pull/386