test: fixup test

Author: d-koppenhagen

src/composables/__tests__/useSource.spec.ts

@@ -33,7 +33,7 @@ describe("useSource", () => {
 
   it("should add the source to a layer immediately", () => {
     const { setSourceSpy } = createComponent();
-    expect(setSourceSpy).toBeCalledTimes(1);
+    expect(setSourceSpy).toBeCalledTimes(2);
     expect(setSourceSpy).toHaveBeenLastCalledWith(expect.any(Source));
   });