[Bug Fix] fix slice bug in LlamaRotaryEmbedding #7882
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Description
In
LlamaRotaryEmbedding,self.cos_cachedandself.sin_cachedare both the shape of[1, max_seq_len_cached, 1, self.dim], butforwardfunction wrongly does slice operation on dimension 2 which is the dimension with the constant value1. We update dimensions which should be slice actually.