RFR: 8367293: RISC-V: enable vectorapi test for VectorMask.laneIsSet

[Dingli Zhang]

Hi,
Can you help to review this patch? Thanks!

[JDK-8366588](https://bugs.openjdk.org/browse/JDK-8366588) adds a vectorapi test for VectorMask.laneIsSet, which we can also enable on RISC-V.

### Test (fastdebug)
- [x] Run compiler/vectorapi/VectorMaskLaneIsSetTest.java on k1, k230 and sg2042

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Commit messages:
 - 8367293: RISC-V: enable vectorapi test for VectorMask.laneIsSet

Changes: https://git.openjdk.org/jdk/pull/27181/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=27181&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8367293
  Stats: 7 lines in 1 file changed: 0 ins; 0 del; 7 mod
  Patch: https://git.openjdk.org/jdk/pull/27181.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/27181/head:pull/27181

PR: https://git.openjdk.org/jdk/pull/27181