Make sure that a RangeSlider doesn't crash in 0x0 environment (flutter#177642)

This is my attempt to handle
flutter#6537 for the RangeSlider
widget.

Co-authored-by: Tong Mu <dkwingsmt@users.noreply.github.com>

Author: ahmedsameha1

packages/flutter/test/material/range_slider_test.dart

@@ -3782,6 +3782,21 @@ void main() {
         ..paragraph(),
     );
   });
+
+  testWidgets('RangeSlider does not crash at zero area', (WidgetTester tester) async {
+    await tester.pumpWidget(
+      MaterialApp(
+        home: Scaffold(
+          body: Center(
+            child: SizedBox.shrink(
+              child: RangeSlider(values: const RangeValues(0, 1), onChanged: (_) {}),
+            ),
+          ),
+        ),
+      ),
+    );
+    expect(tester.getSize(find.byType(RangeSlider)), Size.zero);
+  });
 }
 
 // A value indicator shape to log labelPainter text.