add eagerVictoryOnDrag tests

packages/flutter/test/gestures/tap_and_drag_test.dart

@@ -17,9 +17,12 @@ void main() {
   late List<String> events;
   late BaseTapAndDragGestureRecognizer tapAndDrag;
 
-  void setUpTapAndPanGestureRecognizer() {
+  void setUpTapAndPanGestureRecognizer({
+    bool eagerVictoryOnDrag = true, // This is the default for [BaseTapAndDragGestureRecognizer].
+  }) {
     tapAndDrag = TapAndPanGestureRecognizer()
       ..dragStartBehavior = DragStartBehavior.down
+      ..eagerVictoryOnDrag = eagerVictoryOnDrag
       ..maxConsecutiveTap = 3
       ..onTapDown = (TapDragDownDetails details) {
         events.add('down#${details.consecutiveTapCount}');
@@ -653,6 +656,37 @@ void main() {
       'panend#1']);
   });
 
+  testGesture('Recognizer loses when competing against a DragGestureRecognizer for a drag when eagerVictoryOnDrag is disabled', (GestureTester tester) {
+    setUpTapAndPanGestureRecognizer(eagerVictoryOnDrag: false);
+    final PanGestureRecognizer pans = PanGestureRecognizer()
+      ..onStart = (DragStartDetails details) {
+        events.add('panstart');
+      }
+      ..onUpdate =  (DragUpdateDetails details) {
+        events.add('panupdate');
+      }
+      ..onEnd = (DragEndDetails details) {
+        events.add('panend');
+      }
+      ..onCancel = () {
+        events.add('pancancel');
+      };
+
+    final TestPointer pointer = TestPointer(5);
+    final PointerDownEvent downB = pointer.down(const Offset(10.0, 10.0));
+    // When competing against another [DragGestureRecognizer], the [TapAndPanGestureRecognizer]
+    // will only win when it is the last recognizer in the arena.
+    tapAndDrag.addPointer(downB);
+    pans.addPointer(downB);
+    tester.closeArena(5);
+    tester.route(downB);
+    tester.route(pointer.move(const Offset(40.0, 45.0)));
+    tester.route(pointer.up());
+    expect(events, <String>[
+      'panstart',
+      'panend']);
+  });
+
   testGesture('Beats LongPressGestureRecognizer on a consecutive tap greater than one', (GestureTester tester) {
     setUpTapAndPanGestureRecognizer();