fix: Update min-length validation for the contact to support names with single characters (#10813)

This PR updates the contact form validation to allow a minimum length of one character for the first name.

Fixes
https://linear.app/chatwoot/issue/CW-3993/update-the-validation-on-contact-form-to-support-just-one-character

## Type of change

- [x] Bug fix (non-breaking change which fixes an issue)

## How Has This Been Tested?



https://github.com/user-attachments/assets/2b95af80-ee70-4f4b-8d0d-b01779db9d94




## Checklist:

- [x] My code follows the style guidelines of this project
- [x] I have performed a self-review of my code
- [ ] I have commented on my code, particularly in hard-to-understand
areas
- [ ] I have made corresponding changes to the documentation
- [x] My changes generate no new warnings
- [ ] I have added tests that prove my fix is effective or that my
feature works
- [x] New and existing unit tests pass locally with my changes
- [ ] Any dependent changes have been merged and published in downstream
modules

app/javascript/dashboard/components-next/Contacts/ContactsForm/CreateNewContactDialog.vue

@@ -59,6 +59,7 @@ defineExpose({ dialogRef, contactsFormRef, onSuccess });
             t('CONTACTS_LAYOUT.HEADER.ACTIONS.CONTACT_CREATION.SAVE_CONTACT')
           "
           color="blue"
+          :disabled="contactsFormRef?.isFormInvalid"
           :is-loading="isCreatingContact"
           @click="handleDialogConfirm"
         />