Fix TypeError in rope validation when ignore_keys is a list (#45069)

`_check_received_keys` performs `received_keys -= ignore_keys` where
`received_keys` is a `set`. When model configs are loaded from JSON
(e.g. via huggingface_hub dataclass validation), sets get deserialized
as lists since JSON has no set type, causing:

    TypeError: unsupported operand type(s) for -=: 'set' and 'list'

Wrapping with `set()` handles both cases (no-op for sets, converts lists).

Fixes #45068

Co-authored-by: IrinaArmstrong <a.irene.a@mail.ru>

Author: Fr0do

src/transformers/modeling_rope_utils.py

@@ -916,7 +916,7 @@ def _check_received_keys(
 
         # Some models need to store model-specific keys, and we don't want to throw warning at them
         if ignore_keys is not None:
-            received_keys -= ignore_keys
+            received_keys -= set(ignore_keys)
 
         missing_keys = required_keys - received_keys
         if missing_keys: