[lworld] RFR: 8335641: [lworld] add the MigratedValueClass annotation to some classes missing it, some bug fixes [v2]

[Vicente Romero]

> adding the MigratedValueClass annotation so some classes missing it, plus minor bug fix

Vicente Romero has updated the pull request incrementally with one additional commit since the last revision:

  test changes

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Changes:
  - all: https://git.openjdk.org/valhalla/pull/1155/files
  - new: https://git.openjdk.org/valhalla/pull/1155/files/0397d4d6..ad300ccb

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=valhalla&pr=1155&range=01
 - incr: https://webrevs.openjdk.org/?repo=valhalla&pr=1155&range=00-01

  Stats: 99 lines in 1 file changed: 53 ins; 46 del; 0 mod
  Patch: https://git.openjdk.org/valhalla/pull/1155.diff
  Fetch: git fetch https://git.openjdk.org/valhalla.git pull/1155/head:pull/1155

PR: https://git.openjdk.org/valhalla/pull/1155