fix: resolve clippy warnings (matches!, map_or, redundant guard, unnecessary allocations)

src/mitm/proto.rs

@@ -227,10 +227,7 @@ fn looks_like_valid_message(fields: &[ProtoField], original_len: usize) -> bool
     // (e.g., a long string that happened to have a valid first-field prefix)
     if fields.len() == 1 && original_len > 100 {
         // Single-field messages of >100 bytes are suspicious unless the field is bytes/message
-        match &fields[0].value {
-            ProtoValue::Bytes(_) | ProtoValue::Message(_) => true,
-            _ => false,
-        }
+        matches!(&fields[0].value, ProtoValue::Bytes(_) | ProtoValue::Message(_))
     } else {
         true
     }