[lworld] RFR: 8294051: [lworld] runtime/AccModule/ConstModule.java fails with incorrect error message

[Coleen Phillimore]

This change moves code back to match mainline that checks access flags and checks for invalid JVM_CONSTANTS_Module/Package before reading the class name out of the constant pool.
Tested with tier1-3.

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Commit messages:
 - remove commented out problem list test.
 - 8294051: [lworld] runtime/AccModule/ConstModule.java fails with incorrect error message

Changes: https://git.openjdk.org/valhalla/pull/1550/files
  Webrev: https://webrevs.openjdk.org/?repo=valhalla&pr=1550&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8294051
  Stats: 50 lines in 3 files changed: 17 ins; 22 del; 11 mod
  Patch: https://git.openjdk.org/valhalla/pull/1550.diff
  Fetch: git fetch https://git.openjdk.org/valhalla.git pull/1550/head:pull/1550

PR: https://git.openjdk.org/valhalla/pull/1550