Auto merge of rust-lang#130390 - matthiaskrgr:rollup-evbfwe2, r=matthiaskrgr

Rollup of 5 pull requests

Successful merges:

 - rust-lang#129195 (Stabilize `&mut` (and `*mut`) as well as `&Cell` (and `*const Cell`) in const)
 - rust-lang#130118 (move Option::unwrap_unchecked into const_option feature gate)
 - rust-lang#130295 (Fix target-cpu fpu features on Armv8-R.)
 - rust-lang#130371 (Correctly account for niche-optimized tags in rustc_transmute)
 - rust-lang#130381 (library: Compute Rust exception class from its string repr)

r? `@ghost`
`@rustbot` modify labels: rollup

Author: bors

compiler/rustc_const_eval/messages.ftl

@@ -134,9 +134,6 @@ const_eval_incompatible_return_types =
 const_eval_incompatible_types =
     calling a function with argument of type {$callee_ty} passing data of type {$caller_ty}
 
-const_eval_interior_mutability_borrow =
-    cannot borrow here, since the borrowed element may contain interior mutability
-
 const_eval_interior_mutable_data_refer =
     {const_eval_const_context}s cannot refer to interior mutable data
     .label = this borrow of an interior mutable value may end up in the final value
@@ -230,9 +227,6 @@ const_eval_memory_exhausted =
 const_eval_modified_global =
     modifying a static's initial value from another static's initializer
 
-const_eval_mut_deref =
-    mutation through a reference is not allowed in {const_eval_const_context}s
-
 const_eval_mutable_ptr_in_final = encountered mutable pointer in final value of {const_eval_intern_kind}
 
 const_eval_nested_static_in_thread_local = #[thread_local] does not support implicit nested statics, please create explicit static items and refer to them instead
@@ -363,10 +357,6 @@ const_eval_too_generic =
 const_eval_too_many_caller_args =
     calling a function with more arguments than it expected
 
-const_eval_transient_mut_borrow = mutable references are not allowed in {const_eval_const_context}s
-
-const_eval_transient_mut_raw = raw mutable pointers are not allowed in {const_eval_const_context}s
-
 const_eval_try_block_from_output_non_const =
     `try` block cannot convert `{$ty}` to the result in {const_eval_const_context}s
 const_eval_unallowed_fn_pointer_call = function pointer calls are not allowed in {const_eval_const_context}s