chore(Form): catch-up with v2 changes (#2165)

Co-authored-by: Benjamin Canac <canacb1@gmail.com>

test/components/RadioGroup.spec.ts

@@ -72,7 +72,7 @@ describe('RadioGroup', () => {
           items: ['Option 1', 'Option 2']
         },
         slotTemplate: `
-        <UFormField name="value">
+        <UFormField name="value" label="Radio group">
           <URadioGroup id="input" v-model="state.value" :items="items" />
         </UFormField>
         `
@@ -107,5 +107,11 @@ describe('RadioGroup', () => {
       await flushPromises()
       expect(wrapper.text()).not.toContain('Error message')
     })
+
+    test('no label for=... on FormField', async () => {
+      const { wrapper } = await createForm()
+      const formFieldLabel = wrapper.findAll('label').map(label => label.attributes()).filter(label => !label.for?.includes('Option'))[0]
+      expect(formFieldLabel.for).toBeUndefined()
+    })
   })
 })