RFR: 8354365: Opensource few Modal and Full Screen related tests [v3]

[Abhishek Kumar]

> Few Modal and Full Screen related tests are converted from applet and open sourced.

Abhishek Kumar has updated the pull request incrementally with one additional commit since the last revision:

  Typo fix

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/24685/files
  - new: https://git.openjdk.org/jdk/pull/24685/files/82991942..db1ca090

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=24685&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=24685&range=01-02

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/24685.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/24685/head:pull/24685

PR: https://git.openjdk.org/jdk/pull/24685