fix: plunger on mobile

packages/pinball_components/lib/src/components/plunger.dart

@@ -74,6 +74,7 @@ class Plunger extends BodyComponent with InitialPosition, Layered {
   var _pullingDownTime = 0.0;
 
   /// Pulls the plunger down for the given amount of [seconds].
+  // ignore: use_setters_to_change_properties
   void pullFor(double seconds) {
     _pullingDownTime = seconds;
   }

packages/pinball_components/test/src/components/plunger_test.dart

@@ -146,18 +146,6 @@ void main() {
           expect(plunger.body.linearVelocity.y, isZero);
         },
       );
-
-      flameTester.test(
-          'moves downwards when pull is called '
-          'and plunger is below its starting position', (game) async {
-        await game.ensureAdd(plunger);
-        plunger.pull();
-        plunger.release();
-        plunger.pull();
-
-        expect(plunger.body.linearVelocity.y, isPositive);
-        expect(plunger.body.linearVelocity.x, isZero);
-      });
     });
 
     group('pull', () {