RFR: 8352256: ObjectSynchronizer::quick_notify misses JFR event notification path

[Coleen Phillimore]

On Tue, 18 Mar 2025 11:42:39 GMT, Aleksey Shipilev <shade at openjdk.org> wrote:

> Noticed this while removing OM counters. When doing [JDK-8351187](https://bugs.openjdk.org/browse/JDK-8351187), I apparently forgot to cover a path from `ObjectSynchronizer::quick_notify`, probably due to concurrent renames. I think we can cover this gap while still simplifying the code: let `ObjectMonitor` handle all events, DTrace, JFR, OM stats.
> 
> Additional testing:
>  - [x] Linux x86_64 server fastdebug, `jdk_jfr`

This looks good.  At one point, because of this lack of encapsulation, I wanted us to get rid of quick_notify because I didn't think it was quicker.  This improves the encapsulation too and we can figure out if it's useful later.

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Marked as reviewed by coleenp (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/24097#pullrequestreview-2694257790