syntax error of /=/ when it's used in call expression arguments

[tunz]

Describe the bug

Similar to #2148, when there is an RegExp literal /=/ as a call argument, boa raises an syntax error.

To Reproduce

This JavaScript code reproduces the issue:

fn(/=/);

Expected behavior

ReferenceError of fn is expected, but it shows an syntax error.

$ cat a.js
fn(/=/);
$ ./target/release/boa ./a.js
Uncaught "SyntaxError": "unexpected token '/=', primary expression at line 1, col 4"

Build environment (please complete the following information):

• OS: macos
• Version: main
• Target triple: aarch64-apple-darwin
• Rustc version: rustc 1.64.0 (a55dd71d5 2022-09-19)