Post-mvp? Better error message when a user tries to edit a submitted report version

[pbastia]

Describe the task

When trying to edit a form part of a submitted report version, the user sees the following:

We might want to make something a bit more readable

Acceptance Criteria

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Definition of Done

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Additional context

• Add any other context about the task here.
• Or here

[pbastia]

@patriciarussellCAS this path shouldn't really be visible unless they save the URL to re-use after they submit. I would say not-MVP