fix: center RNTesterExampleFilter on macOS (#2681)

Author: Saadnajmi

packages/rn-tester/js/components/RNTesterExampleFilter.js

@@ -174,6 +174,10 @@ const styles = StyleSheet.create({
     borderWidth: 1,
     paddingVertical: 0,
     height: 35,
+    ...(Platform.OS === 'macos' && {
+      paddingVertical: 5,
+      height: undefined,
+    }),
     flex: 1,
     alignSelf: 'center',
     paddingLeft: 35,