Allow pasting phone numbers in the in-app dialer

When using the Omi app to make calls, it's not possible to paste a phone number into the dialer. If an unknown number calls and you want to call back, you have to either save the contact first or type the number manually, there's no way to copy-paste it.

Please add clipboard paste support to the in-app call screen. It's a small UX fix with a big impact on usability.