Pass down status to onSelectFlag by using isValidNumberForRegion

[ghost]

It may be useful for onSelectFlag validation by using isValidNumberForRegion util.

[patw0929]

Thanks for contribution!

However I find out that you install the google-libphonenumber in this PR, that makes the main.js more larger (from 47K to 389K).
Actually the current src/libphonenumber.js we used was copied from intl-tel-input's custom version. It wrapped some custom functions in there.
And if we import google-libphonenumber here, I think it might have some duplicated part.

Any idea to implement the feature in other way? 🤔

[ghost]

Thanks for answering! I didn't know that you guys just import utils.js from intl-tel-input

Now for sure it would be easier to simplify all this :)

[coveralls]

Coverage decreased (-0.09%) to 94.168% when pulling fd39e98 on viktop:add/status-number-to-onselectflag into 90b32a8 on patw0929:master.