fix: blank block over rooms after expanding a category on Android (#7847)

Author: Rohit3523

app/views/RoomsListView/components/SectionRevealFooter.tsx

@@ -28,7 +28,8 @@ const styles = StyleSheet.create({
 		position: 'absolute',
 		top: 0,
 		left: 0,
-		right: 0
+		right: 0,
+		opacity: 0
 	}
 });