Make sure that a Radio doesn't crash in 0x0 environment (flutter#177580)

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

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

Author: ahmedsameha1

packages/flutter/test/material/radio_test.dart

@@ -2771,4 +2771,15 @@ void main() {
       expect(semanticNode.hint, anyOf(isNull, isEmpty));
     });
   });
+
+  testWidgets('Radio does not crash at zero area', (WidgetTester tester) async {
+    await tester.pumpWidget(
+      const MaterialApp(
+        home: Scaffold(
+          body: Center(child: SizedBox.shrink(child: Radio<bool>(value: true))),
+        ),
+      ),
+    );
+    expect(tester.getSize(find.byType(Radio<bool>)), Size.zero);
+  });
 }