What does this PR do?

Improves the client name validation UX by only showing validation errors after user interaction with the field. This builds on PR #160 by addressing the initial error state that could confuse users.

Changes made:

• Added isNameTouched state to track field interaction
• Modified validation logic to only show errors after field interaction
• Added onBlur handler to detect when user leaves the name input field
• Maintains required field validation while providing better user feedback timing
• Marks client name field as required with * in ClientFormSection

How to test

Open the client creation form

1. Verify the name field starts with no error state
2. Click into the name field and then click away (blur) - should show error
3. Type a name and verify error disappears
4. Delete the name and click away - should show error again
5. Verify the form still requires a name to be submitted