Can't minify logical OR assignments

[chzager]

Describe the bug
When trying to minify a JavaScript file where logical OR assignments (see MDN) are used, Minify runs into an error ("Unexpected token: operator (=)")

To Reproduce
Steps to reproduce the behavior:

1. Make a new JS file
2. Sample code:

let a = "";
let b = "";
b ||= a;

3. Minify the file.
4. See error output console.

Expected behavior
The file should minify to

let a="",b="";b||=a;

Basically it is the same as #144.

Desktop:
VS-Code Version: 1.70.2
Minify Version: v3.3.3
OS: Windows_NT x64 10.0.18363