Refactor import statement for OpenAIServingEmbedding in api_server.py to use aliasing for clarity

Signed-off-by: tzhouam <tzhouam@connect.ust.hk>

vllm_omni/entrypoints/openai/api_server.py

@@ -61,7 +61,7 @@ from vllm.entrypoints.openai.speech_to_text.serving import (
 )
 from vllm.entrypoints.openai.utils import validate_json_request
 from vllm.entrypoints.pooling.classify.serving import ServingClassification
-from vllm.entrypoints.pooling.embed.serving import OpenAIServingEmbedding
+from vllm.entrypoints.pooling.embed.serving import ServingEmbedding as OpenAIServingEmbedding
 from vllm.entrypoints.pooling.pooling.serving import OpenAIServingPooling
 from vllm.entrypoints.pooling.score.serving import ServingScores
 from vllm.entrypoints.serve.disagg.serving import ServingTokens