Whisper pipeline: support stateful decoder #6305

Job	Run time
cpp-multinomial-greedy_causal_lm-ubuntu	14m 31s
cpp-beam_search_causal_lm-notus-7b-v1	31m 10s
cpp-beam_search_causal_lm-Phi-2	15m 57s
cpp-beam_search_causal_lm-Qwen1_5-7B-Chat	33m 15s
cpp-beam_search_causal_lm-ubuntu (./build/samples/cpp/beam_search_causal_lm/beam_search_causal_lm)	18m 39s
cpp-chat_sample-ubuntu	14m 38s
cpp-beam_search_causal_lm-ubuntu (python ./samples/python/beam_search_causal_lm/beam_search_causa...	17m 21s
cpp-greedy_causal_lm-Qwen-7B-Chat	11m 40s
cpp-greedy_causal_lm-redpajama-3b-chat	11m 12s
cpp-greedy_causal_lm-windows	36m 3s
cpp-Phi-1_5	8m 55s
cpp-prompt_lookup_decoding_lm-ubuntu	11m 38s
cpp-speculative_decoding_lm-ubuntu	13m 15s
visual_language_chat_sample-ubuntu-internvl2	23m 58s
visual_language_chat_sample-ubuntu-minicpm_v2_6	6m 49s
cpp-continuous-batching-macos	20m 34s
cpp-continuous-batching-ubuntu	13m 27s
cpp-continuous-batching-windows	24m 13s
visual_language_chat_sample-ubuntu-llava_1_5 / visual_language_chat_sample-ubuntu-llava	30m 17s
visual_language_chat_sample-ubuntu-llava_next / visual_language_chat_sample-ubuntu-llava	35m 51s
ci/gha_overall_status_causal_lm	1s
	6h 33m 24s

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