RFR: 8327972: Convert java/awt/FileDialog/SaveFileNameOverrideTest/SaveFileNameOverrideTest.html applet test to main

[Alexander Zvegintsev]

The test is converted to main.
Tested on Linux, Macos and Windows.

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Commit messages:
 - test move
 - 8327972: Convert java/awt/FileDialog/SaveFileNameOverrideTest/SaveFileNameOverrideTest.html applet test to main

Changes: https://git.openjdk.org/jdk/pull/18231/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=18231&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8327972
  Stats: 225 lines in 3 files changed: 91 ins; 134 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/18231.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/18231/head:pull/18231

PR: https://git.openjdk.org/jdk/pull/18231