fix:chinese input

[q200892907]

Closed AppFlowy-IO/AppFlowy#6165
@LucasXu0 View records found to be handwritten input method can not input the solution to the problem deleted
I did not find this problem in the macos test, please inform me of the reason for deletion

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 72.56%. Comparing base (8e17d14) to head (70ab431).
Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #871      +/-   ##
==========================================
- Coverage   72.57%   72.56%   -0.02%     
==========================================
  Files         316      316              
  Lines       14723    14732       +9     
==========================================
+ Hits        10685    10690       +5     
- Misses       4038     4042       +4     

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[LucasXu0]

@q200892907 Please check this PR. The major problem is that even when there's no composing text, the system still returns a valid one. I changed the shortcut enable logic.