feat: media silence (#13842)

* feat: media silence

* fix: lint

* feat: deny creating custom emoji reaction and using custom emoji from media silenced hosts

* chore: メディアサイレンスの説明にカスタム絵文字の話を追加

* Update locales/ja-JP.yml

Co-authored-by: Sayamame-beans <61457993+Sayamame-beans@users.noreply.github.com>

* chore: update index.d.ts

* docs(changelog): update changelog

---------

Co-authored-by: Sayamame-beans <61457993+Sayamame-beans@users.noreply.github.com>

packages/backend/src/models/json-schema/federation-instance.ts

@@ -88,6 +88,10 @@ export const packedFederationInstanceSchema = {
 			type: 'boolean',
 			optional: false, nullable: false,
 		},
+		isMediaSilenced: {
+			type: 'boolean',
+			optional: false, nullable: false,
+		},
 		iconUrl: {
 			type: 'string',
 			optional: false, nullable: true,