Revert "fix(stitch prediction): split sample tiles correctly"

This reverts commit 31bd146.

src/careamics/prediction_utils/stitch_prediction.py

@@ -37,9 +37,7 @@ def stitch_prediction(
     last_tiles = [tile_info.last_tile for tile_info in tile_infos]
     last_tile_position = np.where(last_tiles)[0]
     image_slices = [
-        slice(
-            None if i == 0 else last_tile_position[i - 1] + 1, last_tile_position[i] + 1
-        )
+        slice(None if i == 0 else last_tile_position[i - 1], last_tile_position[i] + 1)
         for i in range(len(last_tile_position))
     ]
     image_predictions = []