fix(Form & FormGroup): add use client directive (#4822)

Author: Lukas742

packages/main/src/components/Form/index.tsx

@@ -1,3 +1,5 @@
+'use client';
+
 import { Device, useSyncRef } from '@ui5/webcomponents-react-base';
 import { clsx } from 'clsx';
 import type { ElementType, ReactNode } from 'react';

packages/main/src/components/FormGroup/index.tsx

@@ -1,3 +1,5 @@
+'use client';
+
 import { useIsomorphicId } from '@ui5/webcomponents-react-base';
 import type { ReactNode } from 'react';
 import React, { useEffect, useMemo } from 'react';