[lworld] RFR: 8365722: [lworld] SA tests fail with Array Klass rework

[Coleen Phillimore]

This change adds RefArrayKlass.java to SA so that the class is recognized, and updates the ProblemList.

Tested with tier1-3.

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Commit messages:
 - Update ProblemList.

Changes: https://git.openjdk.org/valhalla/pull/2055/files
  Webrev: https://webrevs.openjdk.org/?repo=valhalla&pr=2055&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8365722
  Stats: 121 lines in 6 files changed: 62 ins; 50 del; 9 mod
  Patch: https://git.openjdk.org/valhalla/pull/2055.diff
  Fetch: git fetch https://git.openjdk.org/valhalla.git pull/2055/head:pull/2055

PR: https://git.openjdk.org/valhalla/pull/2055