[jdk17u-dev] RFR: 8328225: Convert ImageDecoratedDnD.html applet test to main

[Goetz Lindenmaier]

I backport this for parity with 17.0.17-oracle.

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

Commit messages:
 - Backport a112fc8bac8ddee87c8555b156519a2785d3223b

Changes: https://git.openjdk.org/jdk17u-dev/pull/3823/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=3823&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8328225
  Stats: 254 lines in 2 files changed: 52 ins; 185 del; 17 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/3823.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev.git pull/3823/head:pull/3823

PR: https://git.openjdk.org/jdk17u-dev/pull/3823