Simultaneous editing of description

[PatrickJosh]

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Is your feature request related to a problem? Please describe.
Currently, simultaneous editing of the description of cards by multiple people does not work, i.e. only the contents of the person who edited the description most recently are saved. This is contrary to the usual experience with the text editor. I was not expecting that and thus have already lost some contents due to this.

Describe the solution you'd like
Live/simultaneous editing of the description by multiple people should be possible.

Describe alternatives you've considered
A notice that simultaneous editing is not possible since currently, people will probably expect that simultaneous editing is possible since it is in other locations where the text editor is used. Moreover, in this case, a warning that another person is editing the description should be implemented, in my opinion.

Additional context
#256 might be related, but it seems to be more applicable to the cards and boards themselves and not their description.