RFR: 8345678: compute_modifiers should not be in create_mirror [v2]

[Coleen Phillimore]

> This moves the modifier_flag computation to when InstanceKlass, ObjArrayKlass and TypeArrayKlass are created.
> 
> Tested with jck:vm and tier1-4.

Coleen Phillimore has updated the pull request incrementally with one additional commit since the last revision:

  remove "jvm support"

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/22618/files
  - new: https://git.openjdk.org/jdk/pull/22618/files/4d546b58..5d87b61a

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=22618&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=22618&range=00-01

  Stats: 1 line in 1 file changed: 0 ins; 1 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/22618.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/22618/head:pull/22618

PR: https://git.openjdk.org/jdk/pull/22618