Fixed menu closing on some devices

[g-apparence]

On mobile (android) when some users open keyboard it is automatically closing.

[CLAassistant]

All committers have signed the CLA.

[LucasXu0]

@g-apparence Please use dart fix --apply to format the code.

[LucasXu0]

Hi, @g-apparence. I formatted the code.

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 2 lines in your changes missing coverage. Please review.

Project coverage is 72.19%. Comparing base (e7d9560) to head (5193b72).
Report is 26 commits behind head on main.

Files with missing lines	Patch %	Lines
...b/src/editor/toolbar/mobile/mobile_toolbar_v2.dart	0.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #941      +/-   ##
==========================================
+ Coverage   72.07%   72.19%   +0.11%     
==========================================
  Files         318      318              
  Lines       15074    15171      +97     
==========================================
+ Hits        10864    10952      +88     
- Misses       4210     4219       +9     

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[g-apparence]

@LucasXu0 thank you,
Sorry I completely forgot to do it