fix(backend): ベースロールのポリシー変更時モデレーションログが残るように (#14418)

* fix(policies): ベースロールのポリシー変更時モデレーションログが残るように (MisskeyIO#700)

(cherry picked from commit 80389a914049f6f26237fde8da7d4e1bd41452fc)

* Update Changelog

---------

Co-authored-by: まっちゃとーにゅ <17376330+u1-liquid@users.noreply.github.com>

packages/backend/src/server/api/endpoints/admin/roles/update-default-policies.ts

@@ -7,6 +7,7 @@ import { Injectable } from '@nestjs/common';
 import { Endpoint } from '@/server/api/endpoint-base.js';
 import { GlobalEventService } from '@/core/GlobalEventService.js';
 import { MetaService } from '@/core/MetaService.js';
+import { ModerationLogService } from '@/core/ModerationLogService.js';
 
 export const meta = {
 	tags: ['admin', 'role'],
@@ -33,12 +34,22 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 	constructor(
 		private metaService: MetaService,
 		private globalEventService: GlobalEventService,
+		private moderationLogService: ModerationLogService,
 	) {
-		super(meta, paramDef, async (ps) => {
+		super(meta, paramDef, async (ps, me) => {
+			const before = await this.metaService.fetch(true);
+
 			await this.metaService.update({
 				policies: ps.policies,
 			});
-			this.globalEventService.publishInternalEvent('policiesUpdated', ps.policies);
+
+			const after = await this.metaService.fetch(true);
+
+			this.globalEventService.publishInternalEvent('policiesUpdated', after.policies);
+			this.moderationLogService.log(me, 'updateServerSettings', {
+				before: before.policies,
+				after: after.policies,
+			});
 		});
 	}
 }