fix(combo): add owner to event args #7282

Author: PlamenaMiteva

projects/igniteui-angular/src/lib/combo/combo.component.spec.ts

@@ -533,6 +533,7 @@ describe('igxCombo', () => {
 
             const args = {
                 searchText: 'Fake',
+                owner: combo,
                 cancel: false
             };
             combo.handleInputChange('Fake');

projects/igniteui-angular/src/lib/combo/combo.component.ts

@@ -990,6 +990,7 @@ export class IgxComboComponent extends DisplayDensityBase implements IgxComboBas
         if (event !== undefined) {
             const args: IComboSearchInputEventArgs = {
                 searchText: event,
+                owner: this,
                 cancel: false
             };
             this.onSearchInput.emit(args);