Unmocking create new task

What does this MR do and why?

Integration MR for the frontend. Since we now have these items available in the GraphQL API, they don't need to be mocked anymore. We are still working on how returning widgets will look, so that is still mocked.

Screenshots or screen recordings

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How to set up and validate locally

Numbered steps to set up and validate the change are strongly suggested.

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• I have evaluated the MR acceptance checklist for this MR.

Related to #341083 (closed)