### 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
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Signed-off-by: Levi-JQ <yujinqi2@huawei.com>
Co-authored-by: Levi-JQ <yujinqi2@huawei.com>