RFR: 8347004: vmTestbase/metaspace/shrink_grow/ShrinkGrowTest/ShrinkGrowTest.java fails with CDS disabled

[Leonid Mesnik]

Test fails with OOME if CDS is disabled. It is not a regression,  it just  rarely executed in this mode.
The fix is just to slightly increase Metaspace. 
Verified that test now pass with CDS disabled + Xcomp. (It fails with Xcomp only)

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Commit messages:
 - 8347004

Changes: https://git.openjdk.org/jdk/pull/25046/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=25046&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8347004
  Stats: 2 lines in 1 file changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/25046.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/25046/head:pull/25046

PR: https://git.openjdk.org/jdk/pull/25046