This is a direct follow-up for the changes done in T291284: Each sidebar element should have a clear label, role, state and description/instructions.
- When the user is editing a single-part template, do not read the instructions to move the template. It's not possible anyway. Except:
Nice to have
- Read the instructions to delete the template because pressing Crtl+Del is still possible and a more direct way for someone using a screen reader to delete a template. (If this complicates the logic of hiding, then it's fine to leave this out)