[jdk21u] RFR: 8312525: New test runtime/os/TestTrimNative.java#trimNative is failing: did not see the expected RSS reduction

[Aleksey Shipilev]

Semi-clean follow-up backport to relax the test.

There are no `ProblemList` additions in 21u, so this changeset does not have the relevant hunk.

Additional testing:
 - [x] Linux x86_64 fastdebug, affected test

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Depends on: https://git.openjdk.org/jdk21u/pull/13

Commit messages:
 - Backport ad34be1f329edc8e7155983835cc70d733c014b8

Changes: https://git.openjdk.org/jdk21u/pull/26/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk21u&pr=26&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8312525
  Stats: 43 lines in 2 files changed: 33 ins; 0 del; 10 mod
  Patch: https://git.openjdk.org/jdk21u/pull/26.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u.git pull/26/head:pull/26

PR: https://git.openjdk.org/jdk21u/pull/26