fix(isPassportNumber): anchor MZ and PH alternations

[chatman-media]

The Mozambique and Philippines passport patterns put the | outside the anchors, so ^ only applied to the first branch and $ only to the last. That meant any extra characters before or after a valid number slipped through:

isPassportNumber('AB0808212XXXX', 'MZ'); // true, should be false
isPassportNumber('ZZZZ08AB12123', 'MZ'); // true, should be false
isPassportNumber('X123456ZZZ', 'PH');    // true, should be false
isPassportNumber('ZZZXY123456', 'PH');   // true, should be false

Wrapping each alternation in a group so both anchors bind to every branch — same shape as the CA/CN/EE entries already use. All the existing valid/invalid fixtures still behave the same; I added the junk-padded cases above to the MZ and PH tests so the regression is covered.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (a38f15b) to head (de8e514).

Additional details and impacted files

@@            Coverage Diff            @@
##            master     #2790   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files          114       114           
  Lines         2587      2587           
  Branches       656       656           
=========================================
  Hits          2587      2587           

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