[Bug] Range error on type header level 6

[CatHood0]

Bug Description

An strange square appears when i try to add a header of level 6 (######). This was printed by the console: RangeError (length): Invalid value: Not kn inclusive range 0...5: 6, and Another exception was thrown: Instance of 'Job<void>'

How to Reproduce

Type: ######
Then, try to type a space.

Expected Behavior

Just a header 6

Operating System

Android

AppFlowy Version(s)

0.5.7 (2905702)

Screenshots

screen-20240519-021358.2.mp4

Additional Context

No response