Remove FOSS federation matrix runtime dependency

Author: AnastaZIuk

apps/meteor/app/slashcommands-invite/server/server.ts

@@ -1,7 +1,6 @@
 import { api, FederationMatrix, isMeteorError } from '@rocket.chat/core-services';
 import type { IUser, SlashCommandCallbackParams } from '@rocket.chat/core-typings';
 import { isBannedSubscription } from '@rocket.chat/core-typings';
-import { validateFederatedUsername } from '@rocket.chat/federation-matrix';
 import { Subscriptions, Users, Rooms } from '@rocket.chat/models';
 import { Meteor } from 'meteor/meteor';
 
@@ -16,6 +15,8 @@ function isStringError(error: unknown): error is { error: string } {
 	return typeof (error as any)?.error === 'string';
 }
 
+const validateFederatedUsername = (): false => false;
+
 /*
  * Invite is a named function that will replace /invite commands
  * @param {Object} message - The message object

apps/meteor/server/settings/federation-service.ts

@@ -1,4 +1,4 @@
-import { generateEd25519RandomSecretKey } from '@rocket.chat/federation-matrix';
+import { randomBytes } from 'crypto';
 
 import { settingsRegistry } from '../../app/settings/server';
 
@@ -39,7 +39,7 @@ export const createFederationServiceSettings = async (): Promise<void> => {
 			invalidValue: '0',
 		});
 
-		const randomKey = generateEd25519RandomSecretKey().toString('base64');
+		const randomKey = randomBytes(32).toString('base64');
 
 		// https://spec.matrix.org/v1.16/appendices/#signing-details
 		await this.add('Federation_Service_Matrix_Signing_Key', randomKey, {