The prompt's field requested focus on every frame. In egui 0.36 each
request also interrupts the input method, and egui-winit answers with
set_ime_allowed(false) then (true), which recreates the X11 input
context (or re-enables Wayland text-input) every frame. On Linux typed
keys go through the input method, so nothing typed reached the field.
Request focus only when the field doesn't have it, as the command
search does (#1638). The permissions password prompt shares the box.
Tests type through synthetic IME pre-edits and commits after opening
an encrypted file from the command line, File > Open, the start page
and a drop, and into the permissions prompt; both fail without the fix.
Guillem Hermida
021812b6ee