Fix Virgin Islands' postal code validation (profile form)

[GeorgeLimaDev]

What is the purpose of this pull request?

Relates to the task LOC-26438
Fix postal code validation for Virgin Islands (VIR). Previously it considered the hyphen as a required digit, when it should be optional.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Requires change to documentation, which has been updated accordingly.

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