Expand spread property find-all-ref test

Author: sandersn

tests/cases/fourslash/findAllRefsForObjectSpread.ts

@@ -20,3 +20,5 @@ verify.referenceGroups(r2, [
     { definition: "(property) A2.a: number", ranges: [r1] },
     { definition: "(property) a: string | number", ranges: [r2] }
 ]);
+
+verify.referenceGroups(r3, [{ definition: "(property) A1.a: string", ranges: [r0, r2, r3] }]);