fix mask dtype differ from latent (#195)

Co-authored-by: yueyang.hyy <[email protected]>

Author: qzzz95

diffsynth_engine/pipelines/flux_image.py

@@ -830,7 +830,7 @@ def prepare_masked_latent(self, image: Image.Image, mask: Image.Image | None, he
                 masked_image = image.clone()
                 masked_image[(mask > 0.5).repeat(1, 3, 1, 1)] = -1
                 latent = self.encode_image(masked_image)
-                mask = torch.nn.functional.interpolate(mask, size=(latent.shape[2], latent.shape[3]))
+                mask = torch.nn.functional.interpolate(mask, size=(latent.shape[2], latent.shape[3])).to(latent.dtype)
                 mask = 1 - mask
                 latent = torch.cat([latent, mask], dim=1)
             elif self.config.control_type == ControlType.bfl_fill: