Location portal doesn't show what the location is

The current location portal dialog asks to share the location, but doesn't show what the location is. This is an issue for a few reasons:

• From a privacy perspective, it's not clear what information you're agreeing to share
• The user has no way of knowing if the current location is wrong - which can cause issues if the location is way off

Adding a location preview to the dialog would solve these issues and is consistent with how other platforms present location permission:

(See the portals mockups for up to date guidance.)