[Bugfix][Harmless] Fix float16 dtype for model_is_embedding (#7566)

Author: mgoin

vllm/entrypoints/openai/api_server.py

@@ -66,7 +66,7 @@ def model_is_embedding(model_name: str, trust_remote_code: bool) -> bool:
                        tokenizer_mode="auto",
                        trust_remote_code=trust_remote_code,
                        seed=0,
-                       dtype="float16").embedding_mode
+                       dtype="auto").embedding_mode
 
 
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