Add regression tests

Author: ahejlsberg

tests/cases/compiler/destructuringAssignmentWithDefault.ts

@@ -2,3 +2,15 @@
 const a: { x?: number } = { };
 let x = 0;
 ({x = 1} = a);
+
+// Repro from #26235
+
+function f1(options?: { color?: string, width?: number }) {
+    let { color, width } = options || {};
+    ({ color, width } = options || {});
+}
+
+function f2(options?: [string?, number?]) {
+    let [str, num] = options || [];
+    [str, num] = options || [];
+}