MapEqualty Hash collides easily

[SShayashi]

From the MapEquality documentation, I thought that the combination of key and value must be the same to have a collision, but the value can be swapped and the hash value will still be the same. For example, the following maps have the same hash value.

import 'package:collection/collection.dart';

void main() {
  final map01 = {
    'key1': 1,
    'key2': 0,
    'key3': 'a',
  };
  final map02 = {
    'key1': 'a',
    'key2': 1,
    'key3': 0,
  };
  final hash01 = DeepCollectionEquality().hash(map01);
  final hash02 = DeepCollectionEquality().hash(map02);
  print(hash01 == hash02); // true.
}

Is this expected behavior?

dart info

$ dart info

If providing this information as part of reporting a bug, please review the information
below to ensure it only contains things you're comfortable posting publicly.

#### General info

- Dart 3.2.0 (stable) (Tue Nov 14 18:26:59 2023 +0000) on "macos_arm64"
- on macos / Version 13.4 (Build 22F66)
- locale is ja-JP

#### Process info

| Memory |  CPU | Elapsed time | Command line                                                                               |
| -----: | ---: | -----------: | ------------------------------------------------------------------------------------------ |
| 426 MB | 0.0% |  01-20:23:25 | dart language-server --client-id=Android-Studio --client-version=AI-222.4459.24 --protocol=analyzer |
|  51 MB | 0.0% |  01-20:23:25 | flutter_tools.snapshot daemon     

[lrhn]

It could probably be improved.
It's an unordered hash, so the hashed of the entries are just xor'ed, but it probably should be an unordered hash of better hashed entries.