RFR: 8370501: vmTestbase/vm/gc/compact/Humongous_NonbranchyTree5M/TestDescription.java intermittent timed out

[SendaoYan]

Hi all,

We found that vmTestbase/vm/gc/compact/Humongous_NonbranchyTree5M/TestDescription.java intermittent timed out when the timeout factor is seted to 1, [JDK-8368668](https://bugs.openjdk.org/browse/JDK-8368668) missed fix this test. Although [JDK-8369491](https://bugs.openjdk.org/browse/JDK-8369491) has revert the default TIMEOUT_FACTOR back to 1. but I think it's necessary to make test run pass steady with TIMEOUT_FACTOR set to 1.

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Commit messages:
 - 8370501: vmTestbase/vm/gc/compact/Humongous_NonbranchyTree5M/TestDescription.java intermittent timed out

Changes: https://git.openjdk.org/jdk/pull/27954/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=27954&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8370501
  Stats: 2 lines in 1 file changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/27954.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/27954/head:pull/27954

PR: https://git.openjdk.org/jdk/pull/27954