RFR: 8298108: Add a regression test for JDK-8297684 [v6]

[Severin Gehwolf]

> Please review this test addition as it would have helped discover a regression when https://bugs.openjdk.org/browse/JDK-8269039 got introduced and subsequently backported. What's more, it might help discover similar issues going forward. Thoughts?
> 
> Testing: Manually produced a build without [JDK-8269039](https://bugs.openjdk.org/browse/JDK-8269039). Test fails without the fix, passes after.

Severin Gehwolf has updated the pull request incrementally with one additional commit since the last revision:

  Fix copyright.

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Changes:
  - all: https://git.openjdk.org/jdk/pull/11515/files
  - new: https://git.openjdk.org/jdk/pull/11515/files/052d6835..b3b4e220

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=11515&range=05
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=11515&range=04-05

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/11515.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/11515/head:pull/11515

PR: https://git.openjdk.org/jdk/pull/11515