RFR: 8351142: Add JFR monitor deflation and statistics events [v5]

[David Holmes]

On Wed, 12 Mar 2025 16:12:12 GMT, Aleksey Shipilev <shade at openjdk.org> wrote:

>> Aleksey Shipilev has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Drop peak count completely
>
> Thank you for reviews, appreciated! I'll integrate shortly.

@shipilev we missed the fact the obj may be null when deflating. A bug is being filed.

-------------

PR Comment: https://git.openjdk.org/jdk/pull/23900#issuecomment-2736428115