Fix: PGVector table index creation issue

api/core/rag/datasource/vdb/pgvector/pgvector.py

@@ -62,7 +62,7 @@ CREATE TABLE IF NOT EXISTS {table_name} (
 """
 
 SQL_CREATE_INDEX = """
-CREATE INDEX IF NOT EXISTS hnsw_idx_{index_hash} ON {table_name}
+CREATE INDEX IF NOT EXISTS embedding_cosine_v1_idx_{index_hash} ON {table_name}
 USING hnsw (embedding vector_cosine_ops) WITH (m = 16, ef_construction = 64);
 """