RFR: 8333774: Avoid eagerly loading various EmptySpliterator classes

[Chen Liang]

On Fri, 7 Jun 2024 08:21:58 GMT, Claes Redestad <redestad at openjdk.org> wrote:

> Trivially move a few private static finals to their respective source type to avoid eagerly loading a few small classes.

Remember to update the copyright year.

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Marked as reviewed by liach (Author).

PR Review: https://git.openjdk.org/jdk/pull/19591#pullrequestreview-2104267610