Accessibility template: Add additional "Owner" checkbox
Created by: umpox
Additional Owner checkbox to enforce:
- Frontend Platform will triage any unassigned issues
- GitStart are available to be immediately assigned to issues if it is obvious that they should work on it
- Teams should assign a member to an issue, or show that they plan to do so, if they're going to work on it.
Just for complete clarity so nothing is inferred!
Test plan
N/A. Minor docs change.