misc: reinforce french phonenumber validation (#73860)

tests/test_misc.py

@@ -647,6 +647,7 @@ def test_validate_phone_fr():
         '1234559',
         '+32123456789',
         '01+23+45+67+89',
+        'tel 0143350133',
     ]
 
     assert all(validate_phone_fr(pn) for pn in valid)

wcs/qommon/misc.py

@@ -835,6 +835,9 @@ def is_ascii_digit(string_value):
 
 
 def validate_phone_fr(string_value):
+    if not re.match(r'^[0\+][\d\.\s]+$', string_value):
+        # leading zero or +, then digits, dots, or spaces
+        return False
     french_country_codes = [33, 262, 508, 590, 594, 596]
     pn = None
     try: