RFR: 8359436: AOTCompileEagerly should not be diagnostic

[Aleksey Shipilev]

On Tue, 17 Jun 2025 08:29:33 GMT, Aleksey Shipilev <shade at openjdk.org> wrote:

> Yeah, there are no tests for this flag. The flag was a late Leyden addition, and it defaults to `true` in Leyden/premain, so we know it performs well enough. But for mainline, we should really have a sanity test, let me do it here.

Added a sanity test. Passes Linux x86_64 server fastdebug/release.

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PR Comment: https://git.openjdk.org/jdk/pull/25799#issuecomment-2979494614