[jdk21] RFR: 8309740: Expand timeout windows for tests in JDK-8179502

[Jamil Nimeh]

This is a backport of the test fixes comprising JDK-8309740.

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Commit messages:
 - Backport 5ca4cdd2caceba9dad8025e5a8851740a3961921

Changes: https://git.openjdk.org/jdk21/pull/58/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk21&pr=58&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8309740
  Stats: 21 lines in 3 files changed: 5 ins; 0 del; 16 mod
  Patch: https://git.openjdk.org/jdk21/pull/58.diff
  Fetch: git fetch https://git.openjdk.org/jdk21.git pull/58/head:pull/58

PR: https://git.openjdk.org/jdk21/pull/58