fix: Flash of empty state on paginated lists (#3351)

* fix: Flash of empty state on paginated lists
fix: Typing of PaginatedList to generic

* test

* test

app/models/BaseModel.ts

@@ -2,13 +2,17 @@ import { pick } from "lodash";
 import { set, computed, observable } from "mobx";
 import { getFieldsForModel } from "./decorators/Field";
 
-export default class BaseModel {
+export default abstract class BaseModel {
   @observable
   id: string;
 
   @observable
   isSaving: boolean;
 
+  createdAt: string;
+
+  updatedAt: string;
+
   store: any;
 
   constructor(fields: Record<string, any>, store: any) {