Fix #[rustc_deprecated_safe_2024]

It should be considered by the edition of the caller, not the callee.

Technically we still don't do it correctly - we need the span of the method name (if it comes from a macro), but we don't keep it and this is good enough for now.

crates/ide-completion/src/render/function.rs

@@ -320,7 +320,7 @@ fn detail(ctx: &CompletionContext<'_>, func: hir::Function, edition: Edition) ->
             ret_ty = async_ret;
         }
     }
-    if func.is_unsafe_to_call(ctx.db, ctx.containing_function) {
+    if func.is_unsafe_to_call(ctx.db, ctx.containing_function, ctx.edition) {
         format_to!(detail, "unsafe ");
     }