fix(isISO6346): anchor the pattern and reject a literal comma

[yfwmaniish]

Closes #2772.

Bug

isISO6346 (and its alias isFreightContainerID) accepts malformed strings because its regex has two flaws:

const isISO6346Str = /^[A-Z]{3}(U[0-9]{7})|([J,Z][0-9]{6,7})$/;

1. Unanchored alternation. The | splits the whole pattern, so ^ anchors only the first branch and $ only the second. Anything starting with [A-Z]{3}U + 7 digits matches regardless of trailing junk, and anything ending with [JZ] + 6-7 digits matches regardless of leading junk.
2. Literal comma in the class. [J,Z] matches J, Z, or ,.

Inputs whose length isn't 11 skip the checksum and return true, so malformed strings pass:

isISO6346('HLXU2008419HELLO'); // true  ❌ (trailing junk)
isISO6346('QJR,123456');       // true  ❌ (literal comma)

Fix

Group the alternation under the shared ^[A-Z]{3} prefix and end anchor, and drop the stray comma:

const isISO6346Str = /^[A-Z]{3}(?:U[0-9]{7}|[JZ][0-9]{6,7})$/;

Tests

Added trailing-junk, leading-junk, and literal-comma cases to the invalid list. Verified against the full existing suite: all 10 valid IDs (incl. the QJRZ123456 J/Z 6-digit case) stay valid and all invalid IDs (incl. the 3 new ones) are rejected.

[Copilot]

Copilot was unable to review this pull request because the user who requested the review has reached their quota limit.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (a79ff98) to head (a972b6a).

Additional details and impacted files

@@            Coverage Diff            @@
##            master     #2877   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files          114       114           
  Lines         2599      2599           
  Branches       658       658           
=========================================
  Hits          2599      2599           

☔ View full report in Codecov by Harness.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.