show error message when voice message upload fails

[DanielStandfest]

Added logic to display an error message when the upload of a voice message fails due to missing user storage quota.

Fixes #741

@crustulumtheoneandonly
@SystemKeeper

[SystemKeeper]

Hello and welcome 👋
Thank you very much for your PR! This looks fine - the only thing is that the code you changed (and the part before) uses tabs, instead of spaces. Since the file is otherwise using completely using spaces, would you be able to change that? 😃

[DanielStandfest]

Hi, thank you.
I didn't recognize it at first.
It should be fixed now.

[Ivansss]

Thank you so much for your PR @DanielStandfest :)

[SystemKeeper]

Thank you :)

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