RFR: 8354887: Preserve runtime blobs in AOT code cache

[Ashutosh Mehra]

On Mon, 5 May 2025 15:32:54 GMT, Vladimir Kozlov <kvn at openjdk.org> wrote:

> Yes, please do that in decode_klass_not_null().
> We update other methods for nmethod caching in JDK 26.

I updated both encode and decode versions. 
Thanks to @adinn for providing aarch64 changes.

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PR Comment: https://git.openjdk.org/jdk/pull/25019#issuecomment-2852346882