Move clippy::module_name_repetitions to restriction (from `pedant…

…ic`)

Rational:
- Too pedantic IMO, it's often better to have fine grained modules and
  then rexport stuff instead of one gigantic file
- STD doesn't do this either. Examples:
  - std::vec::Vec
  - std::collections::vec_deque::VecDequeue
- rust-clippy#7666 commonly ignored

clippy_lints/src/item_name_repetitions.rs

@@ -71,7 +71,7 @@ declare_clippy_lint! {
     /// ```
     #[clippy::version = "1.33.0"]
     pub MODULE_NAME_REPETITIONS,
-    pedantic,
+    restriction,
     "type names prefixed/postfixed with their containing module's name"
 }