RFR: 8275338: Add JFR events for notable serialization situations [v12]

[Raffaello Giulietti]

On Wed, 10 Jan 2024 16:49:50 GMT, Roger Riggs <rriggs at openjdk.org> wrote:

>> Conceptually, these are independent types. There's no logical relationship between them. Sharing a zero length array would convey a false sense of logical sharing.
>
> true, but its wasted space and IMHO ok as a local and private implementation detail.

I agree that, as a private implementation detail, this can be optimized by sharing.

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PR Review Comment: https://git.openjdk.org/jdk/pull/17129#discussion_r1447693340