[train_dreambooth_lora_sdxl] Add --image_interpolation_mode option for image...

[train_dreambooth_lora_sdxl] Add --image_interpolation_mode option for image resizing (default to lanczos) (#11490)

feat(train_dreambooth_lora_sdxl): support --image_interpolation_mode with default to lanczos

examples/dreambooth/train_dreambooth_lora_sdxl.py

@@ -852,7 +852,7 @@ class DreamBoothDataset(Dataset):
 
         self.image_transforms = transforms.Compose(
             [
-                transforms.Resize(size, interpolation=transforms.InterpolationMode.BILINEAR),
+                transforms.Resize(size, interpolation=interpolation),
                 transforms.CenterCrop(size) if center_crop else transforms.RandomCrop(size),
                 transforms.ToTensor(),
                 transforms.Normalize([0.5], [0.5]),