[jdk17u-dev] RFR: 8328124: Convert java/awt/Frame/ShownOnPack/ShownOnPack.html applet test to main

[Goetz Lindenmaier]

I backport this for parity with 17.0.18-oracle

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Commit messages:
 - Backport 7cc1965a252347f37dca69859d5ecaf2b55020c6

Changes: https://git.openjdk.org/jdk17u-dev/pull/3902/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=3902&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8328124
  Stats: 249 lines in 2 files changed: 4 ins; 207 del; 38 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/3902.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev.git pull/3902/head:pull/3902

PR: https://git.openjdk.org/jdk17u-dev/pull/3902