recover scheduler infer_step (#891)

Author: wangshankun

lightx2v/models/schedulers/scheduler.py

@@ -6,6 +6,8 @@ def __init__(self, config):
         self.config = config
         self.latents = None
         self.step_index = 0
+        self.infer_steps = config["infer_steps"]
+        self.caching_records = [True] * config["infer_steps"]
         self.flag_df = False
         self.transformer_infer = None
         self.infer_condition = True  # cfg status