AAE-39949 Fix error while deleting empty row in repeatable section (#11346)

lib/core/src/lib/form/components/widgets/core/form-field.model.spec.ts

@@ -1467,6 +1467,23 @@ describe('FormFieldModel', () => {
                 field.removeRow(0);
                 expect(form.values[field.id]).toEqual(formValues.removeState);
             });
+
+            it('should call onFormFieldChanged if form values contains field id', () => {
+                spyOn(field.form, 'onFormFieldChanged').and.callThrough();
+
+                field.removeRow(1);
+
+                expect(field.form.onFormFieldChanged).toHaveBeenCalled();
+            });
+
+            it('should NOT call onFormFieldChanged if form values does NOT contain field id', () => {
+                spyOn(field.form, 'onFormFieldChanged').and.callThrough();
+
+                field.form.values = {};
+                field.removeRow(1);
+
+                expect(field.form.onFormFieldChanged).not.toHaveBeenCalled();
+            });
         });
 
         describe('disabled state', () => {

lib/core/src/lib/form/components/widgets/core/form-field.model.ts

@@ -487,6 +487,10 @@ export class FormFieldModel extends FormWidgetModel {
         this.rows.splice(index, 1);
         this.updateChildrenFieldsRowIndex();
 
+        if (!this.form.values[this.id]) {
+            return;
+        }
+
         this.form.values[this.id].splice(index, 1);
         this.form.onFormFieldChanged(this);
     }