internlm

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internlm-xcomposer2d5-7b

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For text-only nad text-image forward process takes input of different shape in the in the modeling.py, we should try to keep all data from the dataloader and and remove the text only branches that takes only the first batch from the inner batch.

This way the input of the InternLMXComposer2ForCausalLM.forward will be universally be (1, bs)
Inside the InternLMXComposer2ForCausalLM.forward
In the image-text mode, interleav_wrap encodes the ['text_input'] of size (1, bs)
In the text-only mode, ['text_input'] is firstly squeezed into a list of size (bs,) tokenizer encode the reshaped text inputs.