Add slice before matmut transformation for CB scenario #6265

Job	Run time
cpp-beam_search_causal_lm-Qwen1_5-7B-Chat	33m 2s
cpp-beam_search_causal_lm-ubuntu (./build/samples/cpp/beam_search_causal_lm/beam_search_causal_lm)	18m 47s
cpp-beam_search_causal_lm-ubuntu (python ./samples/python/beam_search_causal_lm/beam_search_causa...	19m 36s
cpp-greedy_causal_lm-Qwen-7B-Chat	11m 20s
cpp-greedy_causal_lm-windows	36m 41s
cpp-multinomial-greedy_causal_lm-ubuntu	17m 47s
cpp-beam_search_causal_lm-notus-7b-v1	31m 5s
cpp-beam_search_causal_lm-Phi-2	16m 32s
cpp-Phi-1_5	8m 13s
cpp-prompt_lookup_decoding_lm-ubuntu	11m 49s
cpp-speculative_decoding_lm-ubuntu	13m 8s
cpp-chat_sample-ubuntu	15m 20s
cpp-continuous-batching-macos	19m 58s
cpp-continuous-batching-ubuntu	15m 22s
cpp-continuous-batching-windows	26m 9s
cpp-greedy_causal_lm-redpajama-3b-chat	11m 3s
visual_language_chat_sample-ubuntu-internvl2	25m 46s
visual_language_chat_sample-ubuntu-minicpm_v2_6	7m 9s
visual_language_chat_sample-ubuntu-llava_1_5 / visual_language_chat_sample-ubuntu-llava	31m 1s
visual_language_chat_sample-ubuntu-llava_next / visual_language_chat_sample-ubuntu-llava	37m 4s
ci/gha_overall_status_causal_lm	1s
	6h 46m 53s

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