[BugFix]: fix EmbeddingReqInput single input error (#7396)

python/sglang/srt/managers/io_struct.py

@@ -530,6 +530,7 @@ class EmbeddingReqInput:
         if self.text is not None:
             if isinstance(self.text, list):
                 self.batch_size += len(self.text)
+                self.is_single = False
             else:
                 self.batch_size += 1
 
@@ -537,12 +538,10 @@ class EmbeddingReqInput:
         if self.input_ids is not None:
             if isinstance(self.input_ids[0], list):
                 self.batch_size += len(self.input_ids)
+                self.is_single = False
             else:
                 self.batch_size += 1
 
-        if self.batch_size > 1:
-            self.is_single = False
-
         # Fill in default arguments
         if self.is_single:
             if self.rid is None: