Fix unnecessary-mut-passed lint (#36490)

Release Notes:

- N/A

Cargo.toml

@@ -832,6 +832,7 @@ redundant_closure = { level = "deny" }
 declare_interior_mutable_const = { level = "deny" }
 collapsible_if = { level = "warn"}
 needless_borrow = { level = "warn"}
+unnecessary_mut_passed = {level = "warn"}
 # Individual rules that have violations in the codebase:
 type_complexity = "allow"
 # We often return trait objects from `new` functions.