RFR: 8328386: Convert java/awt/FileDialog/FileNameOverrideTest test to main [v3]

[Alexander Zuev]

> Convert applet based test to a main based test;
> Move test to an apporpriate location;
> Remove old files;

Alexander Zuev has updated the pull request incrementally with two additional commits since the last revision:

 - Update test/jdk/java/awt/FileDialog/FileNameOverrideTest.java
   
   Co-authored-by: Aleksandr Zvegintsev <77687766+azvegint at users.noreply.github.com>
 - Make test skip if current toolkit is not supported;
   Make test pass or fail automatically;
   Correct test instructions accordingly;

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/18365/files
  - new: https://git.openjdk.org/jdk/pull/18365/files/23a98b35..5a52b8ef

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=18365&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=18365&range=01-02

  Stats: 48 lines in 1 file changed: 17 ins; 21 del; 10 mod
  Patch: https://git.openjdk.org/jdk/pull/18365.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/18365/head:pull/18365

PR: https://git.openjdk.org/jdk/pull/18365