[jdk21u-dev] RFR: 8360981: Remove use of Thread.stop in test/jdk/java/net/Socket/DeadlockTest.java

[Goetz Lindenmaier]

I backport this for parity with 21.0.10-oracle.

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Commit messages:
 - Backport 3263361a28c7e8c02734cb94bc9576e9f3ba5b50

Changes: https://git.openjdk.org/jdk21u-dev/pull/2374/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=2374&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8360981
  Stats: 22 lines in 1 file changed: 7 ins; 7 del; 8 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/2374.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/2374/head:pull/2374

PR: https://git.openjdk.org/jdk21u-dev/pull/2374