[24] JEP draft: Primitive Types in Patterns, instanceof, and switch (Second Preview)

[mpalat]

ref: https://openjdk.org/jeps/8335876

Summary
Enhance pattern matching by allowing primitive type patterns in all pattern contexts, and extend instanceof and switch to work with all primitive types. This is a preview language feature.
This feature was originally proposed by JEP 455, and delivered as a preview feature in JDK 23
and the JDT Core issue #2298