Fixed #5057 - DataTable: persistent expandedRows with dataKey doesn't working properly

components/lib/datatable/BodyRow.vue

@@ -276,9 +276,12 @@ export default {
         };
     },
     watch: {
-        expandedRows(newValue) {
+        expandedRows: {
+            immediate: true,
+            handler(newValue) {
                 this.d_rowExpanded = this.dataKey ? newValue?.[ObjectUtils.resolveFieldData(this.rowData, this.dataKey)] !== undefined : newValue?.some((d) => this.equals(this.rowData, d));
             }
+        }
     },
     methods: {
         columnProp(col, prop) {