Fix app link in in-app browser(#45064)

[apporc]

1. 'someapp:payload' style url is valid, comforming to 'mailto:xxx' and 'tel:xxx';
2. the final url parsed out for above is 'someapp:///', which is wrong.

Reference: https://bugs.telegram.org/c/45064

[apporc]

The spam read all my data and create a story in video tiktop. Please help me up 🥺

What do you mean?