Keit Oliveira 535a7d9220 fix(form): avoid undefined message error as string (#6729) ...

Add validation to prevent converting `undefined` error messages to string in the `FormMessage` component.

This fix addresses issues that occur in complex validation structures, such as validating entire objects.

```ts
const formSchema = z.object({
  location: z.object({
    city: z.string().nonempty(),
    state: z.string().nonempty(),
    country: z.string().nonempty(),
  }).superRefine((data, ctx) => {
    ...
  });
```

```tsx
<FormField
  control={form.control}
  name="location"
  render={() => (
    <FormItem>
      <FormField
        control={form.control}
        name="location.city"
        render={({ field }) => (
          <FormItem>
            <FormLabel>City</FormLabel>
            <FormControl>
              <Input placeholder="Enter city" {...field} />
            </FormControl>
          </FormItem>
        )}
      />

      <FormField
        control={form.control}
        name="location.state"
        render={({ field }) => (
          <FormItem>
            <FormLabel>State</FormLabel>
            <FormControl>
              <Input placeholder="Enter state" {...field} />
            </FormControl>
          </FormItem>
        )}
      />

      <FormField
        control={form.control}
        name="location.country"
        render={({ field }) => (
          <FormItem>
            <FormLabel>Country</FormLabel>
            <FormControl>
              <Input placeholder="Enter country" {...field} />
            </FormControl>
          </FormItem>
        )}
      />

      <FormMessage />
    </FormItem>
  )}
/>
```

2025-02-26 20:35:01 +00:00

..

v4

fix(form): avoid undefined message error as string (#6729)

2025-02-26 20:35:01 +00:00

www

fix(form): avoid undefined message error as string (#6729)

2025-02-26 20:35:01 +00:00