refactor(overlay): some more requested changes

Author: wnvko

projects/igniteui-angular/src/lib/grids/filtering/excel-style/excel-style-custom-dialog.component.ts

@@ -60,7 +60,6 @@ export class IgxExcelStyleCustomDialogComponent implements AfterViewInit {
     private _customDialogOverlaySettings: OverlaySettings = {
         closeOnOutsideClick: true,
         modal: false,
-        closeOnEsc: true,
         positionStrategy: new AutoPositionStrategy(this._customDialogPositionSettings),
         scrollStrategy: new AbsoluteScrollStrategy()
     };

projects/igniteui-angular/src/lib/grids/toolbar/grid-toolbar.component.ts

@@ -249,7 +249,6 @@ export class IgxGridToolbarComponent extends DisplayDensityBase implements After
         positionStrategy: new ConnectedPositioningStrategy(this._positionSettings),
         scrollStrategy: new AbsoluteScrollStrategy(),
         modal: false,
-        closeOnEsc: true,
         closeOnOutsideClick: true,
         excludePositionTarget: true
     };