test: mock package worker warmup in request tab

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

Author: vitormattos

src/tests/components/RightSidebar/RequestSignatureTab.spec.ts

@@ -74,7 +74,7 @@ vi.mock('@nextcloud/router', () => ({
 }))
 
 vi.mock('@libresign/pdf-elements', () => ({
-	setWorkerPath: vi.fn(),
+	ensureWorkerReady: vi.fn(),
 }))
 
 describe('RequestSignatureTab - Critical Business Rules', () => {