RFR: 8340809: Open source few more AWT PopupMenu tests [v2]

[Abhishek Kumar]

> Few more AWT PopupMenu tests converted to either manual or automated and open sourced.

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

  Review comment fix

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Changes:
  - all: https://git.openjdk.org/jdk/pull/21412/files
  - new: https://git.openjdk.org/jdk/pull/21412/files/96975b10..e8630917

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=21412&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=21412&range=00-01

  Stats: 8 lines in 3 files changed: 0 ins; 0 del; 8 mod
  Patch: https://git.openjdk.org/jdk/pull/21412.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/21412/head:pull/21412

PR: https://git.openjdk.org/jdk/pull/21412