Mobile: Reduce side menu edge hit width

Due to this bug:

https://github.com/react-native-community/react-native-side-menu/issues/153

After rotating the device, the edge hit area is too large, more than 50%
of the note in some cases, which makes it difficult to scroll the note
or zoom.

ReactNativeClient/root.js

@@ -720,6 +720,7 @@ class AppComponent extends React.Component {
 		return (
 			<SideMenu
 				menu={sideMenuContent}
+				edgeHitWidth={5}
 				menuPosition={menuPosition}
 				onChange={(isOpen) => this.sideMenu_change(isOpen)}
 				onSliding={(percent) => {