[Bug] Feedback error message in edit channel isn't the same at change/validate

[estelle-rcr]

Describe the bug

When I type a name too long, I have the right error message:

but when I press submit, I have a different message:

Steps to reproduce

/

Expected behavior

check on channel creation too

Environment

No response

OS

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Browser

None

Version

No response

Additional context

No response

Relevant log output

No response