feat(frontend): Botプロテクションの設定変更時は実際に検証を通過しないと保存できないようにする (#15151)

* feat(frontend): CAPTCHAの設定変更時は実際に検証を通過しないと保存できないようにする

* なしでも保存できるようにした

* fix CHANGELOG.md

* フォームが増殖するのを修正

* add comment

* add server-side verify

* fix ci

* fix

* fix

* fix i18n

* add current.ts

* fix text

* fix

* regenerate locales

* fix MkFormFooter.vue

---------

Co-authored-by: syuilo <4439005+syuilo@users.noreply.github.com>

packages/backend/src/server/api/endpoints/admin/captcha/current.ts

@@ -0,0 +1,70 @@
+/*
+ * SPDX-FileCopyrightText: syuilo and misskey-project
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+import { Injectable } from '@nestjs/common';
+import { Endpoint } from '@/server/api/endpoint-base.js';
+import { CaptchaService, supportedCaptchaProviders } from '@/core/CaptchaService.js';
+
+export const meta = {
+	tags: ['admin', 'captcha'],
+
+	requireCredential: true,
+	requireAdmin: true,
+
+	// 実態はmetaの取得であるため
+	kind: 'read:admin:meta',
+
+	res: {
+		type: 'object',
+		properties: {
+			provider: {
+				type: 'string',
+				enum: supportedCaptchaProviders,
+			},
+			hcaptcha: {
+				type: 'object',
+				properties: {
+					siteKey: { type: 'string', nullable: true },
+					secretKey: { type: 'string', nullable: true },
+				},
+			},
+			mcaptcha: {
+				type: 'object',
+				properties: {
+					siteKey: { type: 'string', nullable: true },
+					secretKey: { type: 'string', nullable: true },
+					instanceUrl: { type: 'string', nullable: true },
+				},
+			},
+			recaptcha: {
+				type: 'object',
+				properties: {
+					siteKey: { type: 'string', nullable: true },
+					secretKey: { type: 'string', nullable: true },
+				},
+			},
+			turnstile: {
+				type: 'object',
+				properties: {
+					siteKey: { type: 'string', nullable: true },
+					secretKey: { type: 'string', nullable: true },
+				},
+			},
+		},
+	},
+} as const;
+
+export const paramDef = {} as const;
+
+@Injectable()
+export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-disable-line import/no-default-export
+	constructor(
+		private captchaService: CaptchaService,
+	) {
+		super(meta, paramDef, async () => {
+			return this.captchaService.get();
+		});
+	}
+}