[jdk21u-dev] RFR: 8327874: Convert javax/swing/JTree/4314199/bug4314199.java applet test to main

[Goetz Lindenmaier]

I backport this for parity with 21.0.9-oracle

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Commit messages:
 - Backport 49ce85fae9f06d05367c94615532f6ff87952c79

Changes: https://git.openjdk.org/jdk21u-dev/pull/1892/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=1892&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8327874
  Stats: 222 lines in 3 files changed: 99 ins; 123 del; 0 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/1892.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/1892/head:pull/1892

PR: https://git.openjdk.org/jdk21u-dev/pull/1892