RFR: 8353549: Open source events tests batch2 [v2]

[Alexander Zvegintsev]

> few more events tests are open sourced.

Alexander Zvegintsev has updated the pull request incrementally with one additional commit since the last revision:

  review comments

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Changes:
  - all: https://git.openjdk.org/jdk/pull/24516/files
  - new: https://git.openjdk.org/jdk/pull/24516/files/da47af6a..3e0a491d

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=24516&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=24516&range=00-01

  Stats: 23 lines in 4 files changed: 3 ins; 6 del; 14 mod
  Patch: https://git.openjdk.org/jdk/pull/24516.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/24516/head:pull/24516

PR: https://git.openjdk.org/jdk/pull/24516