feat: pr suggestions

lib/game/bloc/game_bloc.dart

@@ -8,16 +8,12 @@ part 'game_event.dart';
 part 'game_state.dart';
 
 class GameBloc extends Bloc<GameEvent, GameState> {
-  GameBloc({
+  GameBloc() : super(const GameState.initial()) {
-    int bonusLettersLength = bonusWord.length,
-  })  : _bonusLettersLength = bonusLettersLength,
-        super(const GameState.initial()) {
     on<BallLost>(_onBallLost);
     on<Scored>(_onScored);
     on<BonusLetterActivated>(_onBonusLetterActivated);
   }
 
-  final int _bonusLettersLength;
   static const bonusWord = 'GOOGLE';
 
   void _onBallLost(BallLost event, Emitter emit) {
@@ -38,7 +34,7 @@ class GameBloc extends Bloc<GameEvent, GameState> {
       event.letterIndex,
     ];
 
-    if (newBonusLetters.length == _bonusLettersLength) {
+    if (newBonusLetters.length == bonusWord.length) {
       emit(
         state.copyWith(
           activatedBonusLetters: [],

test/game/bloc/game_bloc_test.dart

@@ -131,12 +131,15 @@ void main() {
       );
 
       blocTest<GameBloc, GameState>(
-        'adds the bonus when the sequence is completed',
+        'adds the bonus when the word is completed',
-        build: () => GameBloc(bonusLettersLength: 3),
+        build: GameBloc.new,
         act: (bloc) => bloc
           ..add(const BonusLetterActivated(0))
           ..add(const BonusLetterActivated(1))
-          ..add(const BonusLetterActivated(2)),
+          ..add(const BonusLetterActivated(2))
+          ..add(const BonusLetterActivated(3))
+          ..add(const BonusLetterActivated(4))
+          ..add(const BonusLetterActivated(5)),
         expect: () => const [
           GameState(
             score: 0,
@@ -150,6 +153,24 @@ void main() {
             activatedBonusLetters: [0, 1],
             bonusHistory: [],
           ),
+          GameState(
+            score: 0,
+            balls: 3,
+            activatedBonusLetters: [0, 1, 2],
+            bonusHistory: [],
+          ),
+          GameState(
+            score: 0,
+            balls: 3,
+            activatedBonusLetters: [0, 1, 2, 3],
+            bonusHistory: [],
+          ),
+          GameState(
+            score: 0,
+            balls: 3,
+            activatedBonusLetters: [0, 1, 2, 3, 4],
+            bonusHistory: [],
+          ),
           GameState(
             score: 0,
             balls: 3,