[jdk11u-dev] RFR: 8295774: Write a test to verify List sends ItemEvent/ActionEvent

[Goetz Lindenmaier]

I backport this for parity with 11.0.19-oracle.

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Commit messages:
 - Backport 2a79dfc1f9c419e92aac99f92ef4e40a3471695b

Changes: https://git.openjdk.org/jdk11u-dev/pull/1712/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=1712&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8295774
  Stats: 175 lines in 1 file changed: 175 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/1712.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev pull/1712/head:pull/1712

PR: https://git.openjdk.org/jdk11u-dev/pull/1712