Rename dialog buttons for clarity: 'Cancel' to 'Back' and 'Confirm' to 'Save'

lib/pages/routines/helper/save_routine_helper.dart

@@ -109,12 +109,12 @@ class SaveRoutineHelper {
       spacing: 16,
       mainAxisAlignment: MainAxisAlignment.spaceEvenly,
       children: [
-        DialogFooterButton(
-          text: 'Cancel',
+ DialogFooterButton(
+          text: 'Back',
           onTap: () => Navigator.pop(context),
         ),
         DialogFooterButton(
-          text: 'Confirm',
+          text: 'Save',
           onTap: () {
             if (state.isAutomation) {
               if (state.isUpdate ?? false) {