Sogou Input Method window cannot be located near the text box

When using Sogou Input Method in China, the input method window cannot be located near the text box and always appears at the bottom of the screen.
Sogou Input Method has 530 million users in China, and we hope to make it compatible with this input method.

The default setting for Sogou Input Method is for the input window position to follow the location of the input cursor. Maybe this input cursor is a concept in Windows, but I am not entirely sure.

Test in egui example: hello_world
Testing environment: Windows 10. egui 0.21.0

Sogou Input Method download:
https://shurufa.sogou.com/

Start by reproducing the issue in the egui example `hello_world` on Windows 10 with Sogou Input Method enabled. Trace how egui determines the input cursor or text-box position and compare it with where the input method window appears; done means the window follows the input cursor instead of appearing at the bottom of the screen.

Written by the indexing model from the issue text.