fix: set clean selected patches only if not already set

lib/ui/views/patches_selector/patches_selector_viewmodel.dart

@@ -15,11 +15,13 @@ class PatchesSelectorViewModel extends BaseViewModel {
       locator<PatcherViewModel>().selectedApp!.packageName,
     ));
     patches.sort((a, b) => a.name.compareTo(b.name));
+    if (selectedPatches.isEmpty) {
       for (Patch p in patches) {
         if (!p.excluded) {
           selectedPatches.add(p);
         }
       }
+    }
     notifyListeners();
   }