[lworld] RFR: 8333037: [lworld] Part 2: Prepare compiler implementation and tests for JEP 401

[Tobias Hartmann]

Fixing a few more test and implementation issues that came with or were triggered by the JEP 401 related changes. The remaining issues / ToDo's will be fixed by [JDK-8325106](https://bugs.openjdk.org/browse/JDK-8325106).

Thanks,
Tobias

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Commit messages:
 - 8333037: [lworld] Part 2: Prepare compiler implementation and tests for JEP 401

Changes: https://git.openjdk.org/valhalla/pull/1110/files
  Webrev: https://webrevs.openjdk.org/?repo=valhalla&pr=1110&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8333037
  Stats: 277 lines in 30 files changed: 66 ins; 131 del; 80 mod
  Patch: https://git.openjdk.org/valhalla/pull/1110.diff
  Fetch: git fetch https://git.openjdk.org/valhalla.git pull/1110/head:pull/1110

PR: https://git.openjdk.org/valhalla/pull/1110