Add MSVC Support For UTF-8 in Chat Sample #6570

Job	Run time
cpp-beam_search_causal_lm-notus-7b-v1	14m 20s
cpp-beam_search_causal_lm-Phi-2	17m 36s
cpp-beam_search_causal_lm-Qwen1_5-7B-Chat	33m 23s
cpp-beam_search_causal_lm-ubuntu (./build/samples/cpp/beam_search_causal_lm/beam_search_causal_lm)	17m 23s
cpp-beam_search_causal_lm-ubuntu (python ./samples/python/beam_search_causal_lm/beam_search_causa...	17m 30s
cpp-chat_sample-ubuntu	14m 6s
cpp-continuous-batching-macos	18m 50s
cpp-continuous-batching-ubuntu	15m 54s
cpp-continuous-batching-windows	26m 52s
cpp-greedy_causal_lm-Qwen-7B-Chat	11m 42s
cpp-greedy_causal_lm-redpajama-3b-chat	11m 18s
cpp-greedy_causal_lm-windows	29m 31s
cpp-multinomial-greedy_causal_lm-ubuntu	14m 12s
cpp-Phi-1_5	8m 56s
cpp-prompt_lookup_decoding_lm-ubuntu	12m 8s
cpp-speculative_decoding_lm-ubuntu	12m 18s
visual_language_chat_sample-ubuntu-internvl2	24m 27s
visual_language_chat_sample-ubuntu-minicpm_v2_6	8m 41s
visual_language_chat_sample-ubuntu-llava_1_5 / visual_language_chat_sample-ubuntu-llava	30m 10s
visual_language_chat_sample-ubuntu-llava_next / visual_language_chat_sample-ubuntu-llava	35m 57s
ci/gha_overall_status_causal_lm	1s
	6h 15m 15s

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