RFR: 8322568: JFR: Improve metadata for IEEE rounding mode fields

[Markus Grönlund]

On Wed, 5 Jun 2024 13:19:22 GMT, Erik Gahlin <egahlin at openjdk.org> wrote:

> Could I have review of a couple of changes that align the style of the new event fields with other events, no abbreviations (env) and headline-style capitalization for the label.
> 
> Testring: jdk/jdk/jfr
> 
> Thanks
> Erik

Marked as reviewed by mgronlun (Reviewer).

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PR Review: https://git.openjdk.org/jdk/pull/19560#pullrequestreview-2099720975