fix: Telephone validation in sell goods or services form

[sajclarke]

Description

This PR fixes telephone number validation in the "Sell Goods or Services on Beach/Park" form. The validation regex has been removed to allow more flexible telephone number formats while maintaining the required field constraint.

Type of Change

• Bug fix
• New feature
• Breaking change
• Documentation update

Changes Made

• Remove overly restrictive telephone number validation regex from the sell goods or services form
• Keep the telephone number field as required while allowing broader input formats

Files Changed

• schemas/sell-goods-services-beach-park.json - Removed regex validation pattern for telephone number field (5 lines removed, 1 line added)

Notes

The previous validation regex (^\\+?[0-9]{10,15}$) was too restrictive. This change simplifies validation while keeping the field required, allowing the backend or alternative validation methods to handle more flexible telephone number formats.

Testing

• Form submission tested with various telephone number formats
• Verify telephone field is still required
• Test form rendering with updated schema
• Validate backend handles telephone numbers correctly
• Test on all supported device sizes

Related Github Issue(s)/Trello Ticket(s)

Checklist

• Code follows project style guidelines
• Self-review completed
• Tests added/updated
• Documentation updated

[amazon-inspector-n-virginia]

⏳ I'm reviewing this pull request for security vulnerabilities and code quality issues. I'll provide an update when I'm done

[amazon-inspector-n-virginia]

✅ I finished the code review, and didn't find any security or code quality issues.