[jdk21u-dev] RFR: 8327750: Convert javax/swing/JFileChooser/FileFilterDescription/FileFilterDescription.java applet test to main

[Goetz Lindenmaier]

I backport this for parity with 21.0.9-oracle

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

Commit messages:
 - Backport 78beb031c75d2435c3543a0edc2335b92e115858

Changes: https://git.openjdk.org/jdk21u-dev/pull/1886/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=1886&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8327750
  Stats: 81 lines in 2 files changed: 23 ins; 50 del; 8 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/1886.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/1886/head:pull/1886

PR: https://git.openjdk.org/jdk21u-dev/pull/1886