Change Rust prelude to bring in traits as _

We already renamed many of these to avoid collisions with names like `AsMut` to be `ProtoAsMut`, I think its even better to throw away the name to only bring in the traits for people to be able to use the behavior.

PiperOrigin-RevId: 805477478

Author: protobuf-github-bot

rust/prelude.rs

@@ -17,8 +17,6 @@
 //! `protobuf::` crate instead.
 
 pub use crate::{
-    proto, AsMut as ProtoAsMut, AsView as ProtoAsView, Clear as ProtoClear,
-    ClearAndParse as ProtoClearAndParse, CopyFrom as ProtoCopyFrom, IntoMut as ProtoIntoMut,
-    IntoView as ProtoIntoView, MergeFrom as ProtoMergeFrom, Parse as ProtoParse,
-    Serialize as ProtoSerialize, TakeFrom as ProtoTakeFrom,
+    proto, AsMut as _, AsView as _, Clear as _, ClearAndParse as _, CopyFrom as _, IntoMut as _,
+    IntoView as _, MergeFrom as _, Parse as _, Serialize as _, TakeFrom as _,
 };