Incorrect emit for IIFE with assertion in property access in call expression

[DanielRosenwasser]

Input

(function a() { } as any)().foo()

Expected

(function a() { }().foo)();

Actual

function a() { }().foo();

Notice that this produces an un-parenthesized function expression.

Potentially addressable by work in #18300.

[weswigham]

This is fixed in master. We currently emit (function a() { } as any)().foo() as (function a() { }().foo()); which is valid, thanks to the added enclosing parenthesis. I'll open a PR with a regression test shortly.