Expose all edit fields to Details panel including 'Active Sprint'

**Is your feature request related to a problem? Please describe.**
I'd like to be able to edit the 'active sprint' (to bring it into the current sprint and actually start my work) but it seems that a lot of fields are no longer exposed/editable after you relate a ticket

**Describe the solution you'd like**
Expose all fields relevant to the ticket, not the few shown. Compare 'Create Work item' to the Details panel

**Describe alternatives you've considered**
Going to the webapp is about all you can do

**Additional context**

Start by comparing the Create Work item flow with the Details panel in the VS Code integration, focusing on which fields are available before and after a ticket is related. Confirm the expected set of editable fields, including Active Sprint, and use the reported webapp workaround and screenshots to define what matching behavior means.

Written by the indexing model from the issue text.