chore: More flakey test improvements (#5801)

server/models/Event.ts

@@ -1,4 +1,4 @@
-import type { SaveOptions } from "sequelize";
+import type { SaveOptions, WhereOptions } from "sequelize";
 import {
   ForeignKey,
   AfterSave,
@@ -111,6 +111,19 @@ class Event extends IdModel {
     );
   }
 
+  /**
+   * Find the latest event matching the where clause
+   *
+   * @param where The options to match against
+   * @returns A promise resolving to the latest event or null
+   */
+  static findLatest(where: WhereOptions) {
+    return this.findOne({
+      where,
+      order: [["createdAt", "DESC"]],
+    });
+  }
+
   static ACTIVITY_EVENTS: TEvent["name"][] = [
     "collections.create",
     "collections.delete",