RFR: 8365823: Revert storing abstract and interface Klasses to non-class metaspace [v5]

[Vladimir Kozlov]

On Thu, 18 Sep 2025 18:04:05 GMT, Coleen Phillimore <coleenp at openjdk.org> wrote:

>> This change removes the optimization to not store abstract and interface Klass metadata to non-class metaspace.  Now all Klass metadata is in the Klass metaspace.  This is simpler and less bug prone, and didn't help with the limitation of classes that can be stored in class metaspace materially.
>> Tested with tier1-4.
>
> Coleen Phillimore has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Some limited additional cleanup to HotSpotMetaspaceConstantImpl.java on jvmci.  Reran jvmci tests.

Still good.

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Marked as reviewed by kvn (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/27295#pullrequestreview-3242181368