Fix text.transformer.embeddings.position_ids key error (#595)

* fix create_model & test

* better fix: explained & strict

src/open_clip/factory.py

@@ -100,6 +100,10 @@ def load_checkpoint(model, checkpoint_path, strict=True):
     # detect old format and make compatible with new format
     if 'positional_embedding' in state_dict and not hasattr(model, 'positional_embedding'):
         state_dict = convert_to_custom_text_state_dict(state_dict)
+    # Certain text transformers no longer expect position_ids after transformers==4.31
+    position_id_key = 'text.transformer.embeddings.position_ids'
+    if position_id_key in state_dict and not hasattr(model, position_id_key):
+        del state_dict[position_id_key]
     resize_pos_embed(state_dict, model)
     incompatible_keys = model.load_state_dict(state_dict, strict=strict)
     return incompatible_keys