Rollup merge of #111756 - Urgau:rename_drop_forget_copy_ref_lints, r=fee1-dead

Rename `{drop,forget}_{copy,ref}` lints to more consistent naming

This PR renames previous uplifted lints in rust-lang/rust#109732 to more consistent naming.

I followed the renaming done [here](rust-lang/rust#53224) and also advocated in this [clippy issue](rust-lang/rust-clippy#2845):
   - `drop_copy` to `dropping_copy_types`
   - `forget_copy` to `forgetting_copy_types`
   - `drop_ref` to `dropping_references`
   - `forget_ref` to `forgetting_references`

Author: Dylan-DPC

core/src/mem/mod.rs

@@ -968,7 +968,7 @@ pub const fn replace<T>(dest: &mut T, src: T) -> T {
 /// Integers and other types implementing [`Copy`] are unaffected by `drop`.
 ///
 /// ```
-/// # #![cfg_attr(not(bootstrap), allow(drop_copy))]
+/// # #![cfg_attr(not(bootstrap), allow(dropping_copy_types))]
 /// #[derive(Copy, Clone)]
 /// struct Foo(u8);
 ///