Fix: drop singleton dimension for DSSC GPU kernel runner image shape

src/calng/DsscCorrection.py

@@ -232,7 +232,8 @@ class DsscCorrection(BaseCorrection):
                 return
 
         try:
-            self.kernel_runner.load_data(image_data)
+            # drop the singleton dimension for kernel runner
+            self.kernel_runner.load_data(image_data[:, 0])
         except ValueError as e:
             self.log_status_warn(f"Failed to load data: {e}")
             return