Test ID was set on wrong component, moving it

frontend/src/routes/sponsor/register/stepPersonForm.tsx

@@ -147,6 +147,7 @@ const StepPersonForm = forwardRef(
                 {...register(`last_name`, {
                   required: t<string>('validation.lastNameRequired'),
                 })}
+                inputProps={{ 'data-testid': 'lastName-input-field' }}
               />
               <TextField
                 id="email"
@@ -156,7 +157,6 @@ const StepPersonForm = forwardRef(
                 {...register(`email`, {
                   validate: isValidEmail,
                 })}
-                inputProps={{ 'data-testid': 'lastName-input-field' }}
               />
 
               <Typography variant="h5" sx={{ paddingTop: '1rem' }}>