Hashmap section on const/static construction should mention `LazyLock` as a way to resolve problems mentioned.

[burtonageo]

Location

https://doc.rust-lang.org/stable/std/collections/struct.HashMap.html#usage-in-const-and-static

Summary

In the documentation for HashMap, the section on using it in a static/const context mentions that a const seed should be used. However, using a LazyLock<> to wrap the HashMap allows it to be constructed with a random seed, which resolves the main problem highlighted at the end of the paragraph.

LazyLock has been stabilized as of rust 1.80

[karolzwolak]

@rustbot claim