[modular] Fix the prefix-based renaming if the old and new model share a common name suffix (#37829)

* first try

* Fix and set examples

* style

* fix

* Update modular_test_detr.py

* Update image_processing_new_imgproc_model.py

* Update modular_model_converter.py

examples/modular-transformers/modeling_add_function.py

@@ -5,7 +5,7 @@
 #                          modular_add_function.py file directly. One of our CI enforces this.
 #                🚨🚨🚨🚨🚨🚨🚨🚨🚨🚨🚨🚨🚨🚨🚨🚨🚨🚨🚨🚨🚨🚨🚨🚨🚨🚨🚨🚨🚨🚨🚨🚨🚨🚨🚨🚨🚨🚨🚨🚨🚨🚨🚨🚨🚨🚨🚨🚨
 # Note that zamba does not have the `apply_rotary_pos_emb` function!
-from typing import Optional
+from typing import Optional, Tuple
 
 import torch
 from torch import nn
@@ -62,5 +62,5 @@ class TestAttention(nn.Module):
     def __init__(self):
         pass
 
-    def forward(self) -> tuple[torch.Tensor, Optional[torch.Tensor], Optional[tuple[torch.Tensor]]]:
+    def forward(self) -> Tuple[torch.Tensor, Optional[torch.Tensor], Optional[Tuple[torch.Tensor]]]:
         _ = apply_rotary_pos_emb(1, 1, 1, 1)