RFR: 8284016: Normalize handshake closure names [v3]

[Serguei Spitsyn]

On Mon, 30 Jun 2025 11:53:36 GMT, Anton Artemov <duke at openjdk.org> wrote:

> I reverted closure names changes in JVMT files.

Thanks! Unification is good in general but there is a price to pay.
So, we are normally balancing among different requirements. :)
The `HSClosure` suffix is not perfect either because `HS` normally stands for HotSpot.
But I can be wrong with this assumption.

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PR Review Comment: https://git.openjdk.org/jdk/pull/26014#discussion_r2176851022