Handle errors with quick actions when creating issue/merge request

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Summary

When you create an issue or MR you get a web form with a description field. You can add quick actions. If they fail, the issue or mr is submitted and the errors silently fail. We should handle the errors gracefully with some feedback.

This also occurs when editing an issue or MR.

Steps to reproduce

  1. Create/edit a merge request or issue
  2. Save the merge request or issue
  3. Edit the description and paste and enter a quick action that fails e.g.:
  • /assign_reviewer @jay_mccure @invalid_user_name223423
  • /assign @invalid_user_name223423
  1. Save MR or issue (at this point the section refreshes, perhaps this is where the error gets lost?)

Example Project

Any project

What is the current bug behavior?

No error message

What is the expected correct behavior?

Error message should be displayed

Edited by 🤖 GitLab Bot 🤖