Fixed improper assertion of maxCrossAxisExtent (#75095)

packages/flutter/lib/src/rendering/sliver_grid.dart

@@ -447,7 +447,7 @@ class SliverGridDelegateWithMaxCrossAxisExtent extends SliverGridDelegate {
     this.crossAxisSpacing = 0.0,
     this.childAspectRatio = 1.0,
     this.mainAxisExtent,
-  }) : assert(maxCrossAxisExtent != null && maxCrossAxisExtent >= 0),
+  }) : assert(maxCrossAxisExtent != null && maxCrossAxisExtent > 0),
        assert(mainAxisSpacing != null && mainAxisSpacing >= 0),
        assert(crossAxisSpacing != null && crossAxisSpacing >= 0),
        assert(childAspectRatio != null && childAspectRatio > 0);

packages/flutter/test/widgets/grid_view_test.dart

@@ -783,4 +783,16 @@ void main() {
 
     expect(tester.getSize(find.text('4')), equals(const Size(200.0, mainAxisExtent)));
   });
+
+  testWidgets('SliverGridDelegateWithMaxCrossAxisExtent throws assertion error when maxCrossAxisExtent is 0', (WidgetTester tester) async {
+    const double maxCrossAxisExtent = 0;
+
+    expect(() => Directionality(
+      textDirection: TextDirection.ltr,
+      child: GridView.extent(
+        maxCrossAxisExtent: maxCrossAxisExtent,
+      ),
+    ), throwsA(isA<AssertionError>()));
+
+  });
 }