Phone number validation doesn't allow parentheses and gives incorrect error message

[gene1wood]

Describe the bug
If you go to edit your dinopark contacts and enter a number containing a parenthesis (e.g. +1 (212) 555-5555), the frontend shows a validation error message saying Enter country code +[1-9].

To Reproduce Problem 1
Steps to reproduce the behavior:

1. Go to https://people.mozilla.org/e?section=contact
2. Enter the following in the phone contact field : +1 (212) 555-5555

Expected behavior 1
No error is shown as +1 (212) 555-5555 is a valid US phone number

Actual behavior 1
A validation error message saying Enter country code +[1-9] is shown

To Reproduce Problem 2
Steps to reproduce the behavior:

1. Go to https://people.mozilla.org/e?section=contact
2. Enter the following in the phone contact field : abcdef

Expected behavior 1
An error message is shown indicating the expected format of the phone number or of the allowed characters

Actual behavior 1
A validation error message saying Enter country code +[1-9] is shown.

Is +[1-9] supposed to mean the string must be a + followed by a series of numbers not including 0?
Is it supposed to be a reverse regex indicating one or more instances of the numbers between 1 and 9 not including 0?

It's unclear what this error means, and all the things I can come up with aren't true (as the field must accept at least spaces, the number 0, and dashes. It should include parentheses

Screenshots