test: standardize l10n mock in views/Settings/SignatureEngine

Signed-off-by: Vitor Mattos <1079143+vitormattos@users.noreply.github.com>
(cherry picked from commit 1b97d47)
Signed-off-by: Vitor Mattos <1079143+vitormattos@users.noreply.github.com>

Author: vitormattos

src/tests/views/Settings/SignatureEngine.spec.ts

@@ -4,6 +4,7 @@
  */
 
 import { beforeEach, describe, expect, it, vi } from 'vitest'
+import { createL10nMock } from '../../testHelpers/l10n.js'
 import { mount } from '@vue/test-utils'
 
 import SignatureEngine from '../../../views/Settings/SignatureEngine.vue'
@@ -19,15 +20,7 @@ vi.mock('@nextcloud/event-bus', () => ({
 	emit: (...args: unknown[]) => emitMock(...args),
 }))
 
-vi.mock('@nextcloud/l10n', () => ({
-	t: vi.fn((_app: string, text: string) => text),
-	translate: vi.fn((_app: string, text: string) => text),
-	translatePlural: vi.fn((_app: string, singular: string, plural: string, count: number) => (count === 1 ? singular : plural)),
-	n: vi.fn((_app: string, singular: string, plural: string, count: number) => (count === 1 ? singular : plural)),
-	getLanguage: vi.fn(() => 'en'),
-	getLocale: vi.fn(() => 'en'),
-	isRTL: vi.fn(() => false),
-}))
+vi.mock('@nextcloud/l10n', () => createL10nMock())
 
 const OCP = {
 	AppConfig: {