Fix incorrect tile_latent_min_width calculation in AutoencoderKLMochi (#11294)

Author: kuantuna

src/diffusers/models/autoencoders/autoencoder_kl_mochi.py

@@ -909,7 +909,7 @@ def encode(
     def _decode(self, z: torch.Tensor, return_dict: bool = True) -> Union[DecoderOutput, torch.Tensor]:
         batch_size, num_channels, num_frames, height, width = z.shape
         tile_latent_min_height = self.tile_sample_min_height // self.spatial_compression_ratio
-        tile_latent_min_width = self.tile_sample_stride_width // self.spatial_compression_ratio
+        tile_latent_min_width = self.tile_sample_min_width // self.spatial_compression_ratio
 
         if self.use_tiling and (width > tile_latent_min_width or height > tile_latent_min_height):
             return self.tiled_decode(z, return_dict=return_dict)