Only use canUserEditValue when setValues is defined

packages/blocks/src/store/reducer.js

@@ -404,7 +404,9 @@ export function blockBindingsSources( state = {}, action ) {
 					),
 					getValues: action.getValues,
 					setValues: action.setValues,
-					canUserEditValue: action.canUserEditValue,
+					// Only set `canUserEditValue` if `setValues` is also defined.
+					canUserEditValue:
+						action.setValues && action.canUserEditValue,
 					getFieldsList: action.getFieldsList,
 				},
 			};