feat: Refine 2fa (#11766)

* wip

* Update 2fa.qrdialog.vue

* Update 2fa.vue

* Update CHANGELOG.md

* tweak

* ✌️

packages/backend/src/core/entities/UserEntityService.ts

@@ -434,6 +434,7 @@ export class UserEntityService implements OnModuleInit {
 				preventAiLearning: profile!.preventAiLearning,
 				isExplorable: user.isExplorable,
 				isDeleted: user.isDeleted,
+				twoFactorBackupCodesStock: profile?.twoFactorBackupSecret?.length === 5 ? 'full' : (profile?.twoFactorBackupSecret?.length ?? 0) > 0 ? 'partial' : 'none',
 				hideOnlineStatus: user.hideOnlineStatus,
 				hasUnreadSpecifiedNotes: this.noteUnreadsRepository.count({
 					where: { userId: user.id, isSpecified: true },