isMobilePhone: email with digits is a valid phone

[antelle]

Hi!

There are some emails that pass the phone validation, for example:

isMobilePhone('somethig-1552482192@gmail.com')

returns true.

It happens because of this regex: 'bn-BD': /\+?(88)?0?1[356789][0-9]{8}\b/,.

Probably it should have ^ like other phones, but I'm not sure about the format.

[profnandaa]

Will check and revert, but a PR is also welcome.

[chriso]

Fixed by #1032.