[jdk21u-dev] RFR: 8303773: Replace "main.wrapper" with "test.thread.factory" property in test code [v3]

[Goetz Lindenmaier]

> I backport this to streamline testing in 21.
> I verified all files where respective tests sit nearby. Others will be used in SAP nightly testing.

Goetz Lindenmaier has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains three additional commits since the last revision:

 - Merge branch 'master' into goetz_backport_8303773
 - Backport 89987dbf8789f166fe24e7facf5b8cc9a3c292c2
 - Backport ee9776fa23e2287b704d4f1a55179e83516d1e4c

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

Changes:
  - all: https://git.openjdk.org/jdk21u-dev/pull/444/files
  - new: https://git.openjdk.org/jdk21u-dev/pull/444/files/267a28d1..9466f805

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=444&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=444&range=01-02

  Stats: 1337 lines in 52 files changed: 872 ins; 315 del; 150 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/444.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/444/head:pull/444

PR: https://git.openjdk.org/jdk21u-dev/pull/444