feat: correct DataTableColumns typing

src/app/shared/models/data-table-columns.model.ts

@@ -11,7 +11,7 @@ import {
 } from "solidify-frontend";
 
 export interface DataTableColumns<TResource extends BaseResourceType = any> {
-  field: keyof TResource | string;
+  field: string; // keyof TResource
   header: string;
   tooltip?: (value: string) => string | undefined;
   type?: FieldTypeEnum;
@@ -23,8 +23,8 @@ export interface DataTableColumns<TResource extends BaseResourceType = any> {
   isSortable?: boolean;
   isFilterable?: boolean;
   searchableSingleSelectSort?: Sort;
-  filterableField?: keyof TResource | string;
-  sortableField?: keyof TResource | string;
+  filterableField?: string; // keyof TResource
+  sortableField?: string; // keyof TResource
   resourceNameSpace?: ResourceNameSpace;
   resourceState?: ResourceState<any, any>;
   component?: DataTableComponentEnum;