Required Fields Error and Unnecessary Network Requests

[rajku-dev]

• Submit button should be disabled using isDirty property from react-hook-form in Update Encounter form to prevent unnecessary network requests

• Date of Birth can't be in future - update zod schema
• Phone number field should not take more than 10 numbers after +91
• Have a red asterisk in front of the label of all required fields just like State field.

To Reproduce
Click here

Expected behavior
Submit button should be disabled if no changes are made to form

[rajku-dev]

@rithviknishad Can i work on this task.