chore: analysis fixes

lib/game/pinball_game.dart

@@ -42,7 +42,7 @@ class PinballGame extends Forge2DGame
 
     await _addGameBoundaries();
     unawaited(_addPlunger());
-    //unawaited(_addPaths());
+    unawaited(_addPaths());
 
     // Corner wall above plunger so the ball deflects into the rest of the
     // board.

test/game/components/ball_test.dart

@@ -74,7 +74,7 @@ void main() {
       flameTester.test(
         'has default filter maskBits',
         (game) async {
-          final ball = Ball(position: Vector2.zero());
+          final ball = Ball();
           await game.ensureAdd(ball);
 
           final fixture = ball.body.fixtures[0];
@@ -158,7 +158,7 @@ void main() {
         (game) async {
           const newLayer = Layer.jetpack;
 
-          final ball = Ball(position: Vector2.zero());
+          final ball = Ball();
           await game.ensureAdd(ball);
 
           final fixture = ball.body.fixtures[0];

test/game/components/pathway_test.dart

@@ -131,7 +131,6 @@ void main() {
           'has default filter categoryBits when not modified',
           (game) async {
             final pathway = Pathway.straight(
-              position: Vector2.zero(),
               start: Vector2(10, 10),
               end: Vector2(20, 20),
               width: width,
@@ -154,7 +153,6 @@ void main() {
           (game) async {
             const layer = Layer.jetpack;
             final pathway = Pathway.straight(
-              position: Vector2.zero(),
               start: Vector2(10, 10),
               end: Vector2(20, 20),
               width: width,