With this commit, when a phone number is clicked (in readonly),
- if voip is not installed, it opens an app according to the user
choice (e.g. skype), and on mobile, it opens the phone app to
call the number
- if voip is installed, in desktop, it opens voip, and on mobile,
it still opens the phone app to call the number, because webRTC
is not supported.
This commit also makes the employee form view use the phone widget
for the 'Work Phone' and 'Work Mobile' fields.
Task #30369