[processing] Fixes #18187: SAGA output extent values are not in the right order

Author: slarosa

python/plugins/processing/algs/saga/SagaAlgorithm.py

@@ -277,8 +277,8 @@ def processAlgorithm(self, parameters, context, feedback):
 
                 values = []
                 values.append(rect.xMinimum())
-                values.append(rect.yMinimum())
                 values.append(rect.xMaximum())
+                values.append(rect.yMinimum())
                 values.append(rect.yMaximum())
 
                 for i in range(4):