fix(state-directive): clear previous selection setting state #9139

Author: hanastasov

projects/igniteui-angular/src/lib/grids/state.directive.spec.ts

@@ -18,7 +18,7 @@ import { FilteringLogic } from '../data-operations/filtering-expression.interfac
 import { DefaultSortingStrategy } from '../data-operations/sorting-strategy';
 
 /* eslint-disable max-len */
-describe('IgxGridState - input properties #grid', () => {
+fdescribe('IgxGridState - input properties #grid', () => {
     configureTestSuite();
 
     beforeAll(waitForAsync(() => {
@@ -360,7 +360,7 @@ describe('IgxGridState - input properties #grid', () => {
 
         let gridState = state.getState(true, 'rowSelection');
         expect(gridState).toBe(initialState);
-
+        state.setState('{"rowSelection":[2]}');
         state.setState(rowSelectionState);
         gridState = state.getState(false, 'rowSelection');
         HelperFunctions.verifyRowSelection(grid.selectedRows, gridState as IGridState);

projects/igniteui-angular/src/lib/grids/state.directive.ts

@@ -237,7 +237,7 @@ export class IgxGridStateDirective {
                 return { rowSelection: selection };
             },
             restoreFeatureState: (context: IgxGridStateDirective, state: any[]): void => {
-                context.currGrid.selectRows(state);
+                context.currGrid.selectRows(state, true);
             }
         },
         cellSelection: {