Fix drop lastViewedAt migration order for fresh databases.

Run the column drop after AddUploadTable so TypeORM does not execute ALTER before uploads exists.

backend/src/database/migrations/1791230839247-drop-upload-last-viewed-at.ts

@@ -0,0 +1,13 @@
+import { MigrationInterface, QueryRunner } from 'typeorm';
+
+export class DropUploadLastViewedAt1791230839247 implements MigrationInterface {
+    name = 'DropUploadLastViewedAt1791230839247';
+
+    public async up(queryRunner: QueryRunner): Promise<void> {
+        await queryRunner.query(`ALTER TABLE "uploads" DROP COLUMN "lastViewedAt"`);
+    }
+
+    public async down(queryRunner: QueryRunner): Promise<void> {
+        await queryRunner.query(`ALTER TABLE "uploads" ADD "lastViewedAt" TIMESTAMP WITH TIME ZONE`);
+    }
+}