[lworld] Integrated: 8338013: [lworld] User defined value classes cannot extend j.l.Number

[Vicente Romero]

When adding the value flag to migrated value classes we need to unset the identity flag if it was previously set

-------------

Commit messages:
 - 8338013: [lworld] User defined value classes cannot extend j.l.Number

Changes: https://git.openjdk.org/valhalla/pull/1195/files
  Webrev: https://webrevs.openjdk.org/?repo=valhalla&pr=1195&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8338013
  Stats: 13 lines in 2 files changed: 13 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/valhalla/pull/1195.diff
  Fetch: git fetch https://git.openjdk.org/valhalla.git pull/1195/head:pull/1195

PR: https://git.openjdk.org/valhalla/pull/1195