refactor: introduce bindThis decorator to bind this automaticaly

packages/backend/src/core/chart/ChartManagementService.ts

@@ -13,6 +13,7 @@ import PerUserFollowingChart from './charts/per-user-following.js';
 import PerUserDriveChart from './charts/per-user-drive.js';
 import ApRequestChart from './charts/ap-request.js';
 import type { OnApplicationShutdown } from '@nestjs/common';
+import { bindThis } from '@/decorators.js';
 
 @Injectable()
 export class ChartManagementService implements OnApplicationShutdown {
@@ -49,6 +50,7 @@ export class ChartManagementService implements OnApplicationShutdown {
 		];
 	}
 
+	@bindThis
 	public async run() {
 		// 20分おきにメモリ情報をDBに書き込み
 		this.saveIntervalId = setInterval(() => {