Fixes #8731 by adding tooltip to the geolocation control button.

[BAByrne]

Fixes issue #8734 (wrong issue # in commit msg) - Added a title attribute to geolocation control button.

• briefly describe the changes in this PR
• manually test the debug page

[ryanhamley]

Thanks for the PR @BAByrne! It looks good. I'm just going to tag in a teammate for their thoughts on semantics.

@chloekraw This PR seems like a good idea but do you have any thoughts on what would be an appropriate tooltip text? Show my location is suggested here. Find my location might be a more accurate representation of the geolocation function. Also, in the navigation control, the buttons' title and aria-label are the same thing. I think we should probably follow that pattern here. The aria-label "Geolocate" seems a bit uninformative though so we should probably match it to whatever we decide on for a title.

[andrewharvey]

I added the "Geolocate" label back in #3492, I agree that "Geolocate", while it might be clear for web developers, it's probably not the clearest for the average user.

I think "Show my location" or "Find my location" are both fine. Sometimes the control will add a blue dot, sometimes it won't (depending on options) but I still think either are fine for both scenarios.

I agree we should keep title and aria-label in sync.

[chloekraw]

@ryanhamley's suggestion of Find my location sounds good to me 👍