fix missing import

Author: siriwatknp

packages/x-date-pickers/src/internals/components/PickerFieldUI.tsx

@@ -7,6 +7,7 @@ import MuiTextField, { TextFieldProps } from '@mui/material/TextField';
 import MuiIconButton, { IconButtonProps } from '@mui/material/IconButton';
 import MuiInputAdornment, { InputAdornmentProps } from '@mui/material/InputAdornment';
 import { SvgIconProps } from '@mui/material/SvgIcon';
+import { major as materialMajor } from '@mui/material/version';
 import useSlotProps from '@mui/utils/useSlotProps';
 import { MakeOptional, SlotComponentPropsFromProps } from '@mui/x-internals/types';
 import { FieldOwnerState } from '../../models';