### What this PR does / why we need it? Resolve the interface compatibility issue of get_input_embeddings in MM, because the get_input_embeddings func of other model does not have the is_multimodal parameter --------- Signed-off-by: Levi-JQ <yujinqi2@huawei.com> Co-authored-by: Levi-JQ <yujinqi2@huawei.com>