Capture tokens for Pat used in macro_rules! argument

This extends PR rust-lang#73293 to handle patterns (Pat). Unlike expressions,
patterns do not support custom attributes, so we only need to capture
tokens during macro_rules! argument parsing.

clippy_lints/src/unnested_or_patterns.rs

@@ -340,6 +340,7 @@ fn take_pat(from: &mut Pat) -> Pat {
         id: DUMMY_NODE_ID,
         kind: Wild,
         span: DUMMY_SP,
+        tokens: None
     };
     mem::replace(from, dummy)
 }