fix(worker): keep attachment decay state on a stale expiry row (#2285)

fluxer_api/src/api/attachment/AttachmentDecayRepository.ts

@@ -1,7 +1,13 @@
 // SPDX-License-Identifier: AGPL-3.0-or-later
 
 import type {AttachmentID, ChannelID, MessageID} from '../BrandedTypes';
-import {BatchBuilder, fetchMany, fetchManyInChunks, fetchOne} from '../database/CassandraQueryExecution';
+import {
+	BatchBuilder,
+	deleteOneOrMany,
+	fetchMany,
+	fetchManyInChunks,
+	fetchOne,
+} from '../database/CassandraQueryExecution';
 import {AttachmentDecayByExpiry, AttachmentDecayById} from '../Tables';
 import type {AttachmentDecayRow} from '../types/AttachmentDecayTypes';
 
@@ -73,6 +79,20 @@ export class AttachmentDecayRepository {
 		return fetchMany(query.bind({expiry_bucket: bucket, current_time: currentTime}));
 	}
 
+	async deleteExpiryRecord(params: {
+		expiry_bucket: number;
+		expires_at: Date;
+		attachment_id: AttachmentID;
+	}): Promise<void> {
+		await deleteOneOrMany(
+			AttachmentDecayByExpiry.deleteByPk({
+				expiry_bucket: params.expiry_bucket,
+				expires_at: params.expires_at,
+				attachment_id: params.attachment_id,
+			}),
+		);
+	}
+
 	async deleteRecords(params: {expiry_bucket: number; expires_at: Date; attachment_id: AttachmentID}): Promise<void> {
 		const batch = new BatchBuilder();
 		batch.addPrepared(