test(unit): mock async components in Validation.spec to fix vitest worker errors

defineAsyncComponent triggers internal Vite dev-server fetch requests
when the component is registered. When the vitest worker closes after
all tests finish, those fetches are still pending, producing 13
'Closing rpc while fetch was pending' unhandled rejections.

Mocking the three async component modules prevents the dynamic
imports from ever being initiated during the test run.

Signed-off-by: Vitor Mattos <1079143+vitormattos@users.noreply.github.com>

Author: vitormattos

src/tests/views/Validation.spec.ts

@@ -10,6 +10,13 @@ import { getCapabilities } from '@nextcloud/capabilities'
 import JSConfetti from 'js-confetti'
 import Validation from '../../views/Validation.vue'
 
+// Mock async components to prevent defineAsyncComponent from triggering
+// pending Vite dev-server fetches that outlive the worker and cause
+// "Closing rpc while fetch was pending" errors in Vitest.
+vi.mock('../../components/validation/EnvelopeValidation.vue', () => ({ default: { template: '<div />' } }))
+vi.mock('../../components/validation/FileValidation.vue', () => ({ default: { template: '<div />' } }))
+vi.mock('../../components/validation/SigningProgress.vue', () => ({ default: { template: '<div />' } }))
+
 // Mock js-confetti
 vi.mock('js-confetti', () => ({
 	default: vi.fn(),