fix: hide merge-and-edit-rule when not creating rule (#6393)

* fix: hide merge-and-edit-rule when not creating rule

When 'Automatically rename these payees in the future' is unchecked, no rule is created, so 'Merge and edit rule' should not be offered.

Fixes #6377

* docs: add release note for #6393

packages/desktop-client/src/components/modals/MergeUnusedPayeesModal.tsx

@@ -205,7 +205,7 @@ export function MergeUnusedPayeesModal({
               >
                 <Trans>Merge</Trans>
               </Button>
-              {!isEditingRule && (
+              {!isEditingRule && shouldCreateRule && (
                 <Button
                   style={{ marginRight: 10 }}
                   onPress={() => {