message: Add better type safety (CR)
diff: @@ -10,11 +10,11 @@ import InstitutionSummaryMetricModel from 'ember-osf-web/models/institution-summ
  import InstitutionUserModel from 'ember-osf-web/models/institution-user';
  export default class InstitutionsDashboardController extends Controller {
  - @alias('model.taskInstance.value') modelValue!: InstitutionsDashboardModel;
  - @alias('modelValue.institution') institution!: InstitutionModel;
  - @alias('modelValue.summaryMetrics') summaryMetrics!: InstitutionSummaryMetricModel;
  - @alias('modelValue.userMetrics') userMetrics!: InstitutionUserModel[];
  - @alias('modelValue.departmentMetrics') departmentMetrics!: InstitutionDepartmentModel[];
  + @alias('model.taskInstance.value') modelValue?: InstitutionsDashboardModel;
  + @alias('modelValue.institution') institution?: InstitutionModel;
  + @alias('modelValue.summaryMetrics') summaryMetrics?: InstitutionSummaryMetricModel;
  + @alias('modelValue.userMetrics') userMetrics?: InstitutionUserModel[];
  + @alias('modelValue.departmentMetrics') departmentMetrics?: InstitutionDepartmentModel[];
  csvImgSrc: string = '/assets/images/institutions/csv.svg';
  