fix(kb-nav): clear active node when leaving summary section

Closes #9234

Author: Aleksandyr

projects/igniteui-angular/src/lib/grids/grid-base.directive.ts

@@ -2992,8 +2992,9 @@ export abstract class IgxGridBaseDirective extends DisplayDensityBase implements
                 ((event.target === this.tbody.nativeElement && this.navigation.activeNode.row >= 0 &&
                     this.navigation.activeNode.row < this.dataView.length)
                     || (event.target === this.theadRow.nativeElement && this.navigation.activeNode.row === -1)
-                    || (event.target === this.tfoot.nativeElement && this.navigation.activeNode.row === this.dataView.length)) &&
-                !(this.rowEditable && this.crudService.rowEditingBlocked && this.rowInEditMode)) {
+                    || (event.target === this.tfoot.nativeElement.children[0] &&
+                        this.navigation.activeNode.row === this.dataView.length)) &&
+                !(this.rowEditable && this.crudService.rowEditingBlocked && this.crudService.rowInEditMode)) {
                 this.navigation.lastActiveNode = this.navigation.activeNode;
                 this.navigation.activeNode = {} as IActiveNode;
                 this.notifyChanges();

projects/igniteui-angular/src/lib/grids/grid-navigation.service.ts

@@ -336,7 +336,8 @@ export class IgxGridNavigationService {
         const next = shift ? this.grid.getPreviousCell(this.activeNode.row, this.activeNode.column, col => col.editable) :
             this.grid.getNextCell(this.activeNode.row, this.activeNode.column, col => col.editable);
         if (!this.grid.rowInEditMode && this.isActiveNode(next.rowIndex, next.visibleColumnIndex)) {
-            this.grid.endEdit(true);
+            this.grid.endEdit(true, event);
+            this.grid.tbody.nativeElement.focus();
             return;
         }
         event.preventDefault();