When only one country is available for selection select it
The meta value was already being selected in the user interface, this makes sure the meta value will match.  Can't wait for a change event or submit (as was the case in prior releases) because the js is doing more work in 3.8.14.x
Merge pull request #1265 from JeffPyeBrook/pr-1256-set-country-when-one-available

When only one country is available for selection select it