Allow Boolean() to be used to perform a null check (#29955)

* Allow Boolean() to be used to perform a null check

* Add missing test case output

src/lib/es5.d.ts

@@ -513,7 +513,7 @@ interface Boolean {
 
 interface BooleanConstructor {
     new(value?: any): Boolean;
-    (value?: any): boolean;
+    <T>(value?: T): value is Exclude<T, false | null | undefined | '' | 0>;
     readonly prototype: Boolean;
 }