fix: Resolve container items collision during sub-grid wrapper instantiation (#9607)

Author: tobiu

src/grid/Container.mjs

@@ -601,7 +601,6 @@ class GridContainer extends BaseContainer {
         return ClassSystemUtil.beforeSetInstance(value, GridBody, {
             flex         : 1,
             gridContainer: me,
-            parentId     : me.id,
             store        : me.store,
             theme        : me.theme,
             useInternalId: me.useInternalId
@@ -653,7 +652,6 @@ class GridContainer extends BaseContainer {
 
         return ClassSystemUtil.beforeSetInstance(value, header.Toolbar, {
             flex              : 'none',
-            parentId          : me.id,
             showHeaderFilters : me.showHeaderFilters,
             sortable          : me.sortable,
             theme             : me.theme,