Reader search "\" crash

[irfano]

Expected behavior

When searching anything ending with \ ("a\", "test\"), the app shouldn't crash.

Actual behavior

When searching anything ending with \ ("a\", "test\"), the app crashes.

https://user-images.githubusercontent.com/2471769/186738072-3608dbd3-aeb8-4aba-88ee-429221666500.mp4

Steps to reproduce the behavior

1. Launch the app.
2. Navigate to the Reader tab.
3. Tap 🔍search button top right of the screen.
4. Type something ending with \ ("a\" or "test\").

Tested on iPhone 13 Pro Max Simulator, iOS 15.5, WPiOS 20.6