When registering HOF/Family Member, two different messages are showing for Mobile Number field (Inconsistent).

Steps to Reproduce:

1. Navigate to Registration screen
2. Enter invalid mobile number (e.g., 9999999999)
3. Observe validation message
4. Repeat with different scenarios:
   • Toggle “Mobile number not available”
   • Enter alphabets / special characters
   • Enter less/more than required digits
   • Switch between online/offline mode

Actual Result:

• Different validation messages are shown for the same field:
  • “Only Alphabets in upper case allowed”
  • “Field must contain 6 digits”
• Messages are:
  • Incorrect (mobile number should not allow alphabets)
  • Inconsistent (different validations for same field)

Expected Result:

• Mobile number field should follow consistent validation rules:
  • Only numeric values allowed
  • Fixed length validation (e.g., 10 digits)
  • Proper error messages like:
    • “Mobile number must be 10 digits”
    • “Only numbers are allowed”