RFR: 8328648: Remove applet usage from JFileChooser tests bug4150029 [v6]

[Alisen Chung]

> Removing applet usage from manual JFileChooser tests

Alisen Chung has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains seven additional commits since the last revision:

 - Merge branch 'master' of https://github.com/openjdk/jdk into 2024_spring_testsprint_8
 - removed second pass check
 - moved create ui code to helper, change test pass check, add mouse release, remove getContentPane
 - change to automatic test
 - force fail
 - remove extra dialog
 - init commit

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Changes:
  - all: https://git.openjdk.org/jdk/pull/18415/files
  - new: https://git.openjdk.org/jdk/pull/18415/files/eb58531e..0de40f87

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=18415&range=05
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=18415&range=04-05

  Stats: 353493 lines in 2818 files changed: 17195 ins; 12263 del; 324035 mod
  Patch: https://git.openjdk.org/jdk/pull/18415.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/18415/head:pull/18415

PR: https://git.openjdk.org/jdk/pull/18415