lazy_loading/saving dir name no longer controled by random_state para…

…m -- they will be completely randoom, so the same random_state will lead to different model tmp folder number

stemflow/model/AdaSTEM.py

@@ -266,7 +266,7 @@ def __init__(
         self.lazy_loading_dir = lazy_loading_dir
         if self.lazy_loading:
             if self.lazy_loading_dir is None:
-                saving_code = self.rng.integers(1, 1e8)
+                saving_code = int(np.random.uniform(1, 1e8))
                 self.lazy_loading_dir = f'./tmp_{saving_code}'
 
         if not verbosity == 0: