RFR: 8328648: Remove applet usage from JFileChooser tests bug4150029 [v7]

[Alisen Chung]

> Removing applet usage from manual JFileChooser tests

Alisen Chung has updated the pull request incrementally with one additional commit since the last revision:

  added headful tag, remove pass boolean var and directly evaluate pass condition

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Changes:
  - all: https://git.openjdk.org/jdk/pull/18415/files
  - new: https://git.openjdk.org/jdk/pull/18415/files/0de40f87..29486a10

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=18415&range=06
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=18415&range=05-06

  Stats: 6 lines in 1 file changed: 1 ins; 4 del; 1 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