fix(suggest): input clear on multiple selection

Author: Gabriela-David

projects/angular/components/ui-suggest/src/ui-suggest.component.ts

@@ -1221,7 +1221,9 @@ export class UiSuggestComponent extends UiSuggestMatFormFieldDirective
             if (!this.multiple) {
                 this._clearSelection();
             } else if (!this.compact) {
-                this.inputControl.setValue('');
+                if (this.inputControl.value) {
+                    this.inputControl.setValue('');
+                }
                 this._focusChipInput();
             }
             this._pushEntry(value);