Improve TypeScript and JavaScript template/regex filtering

[Vladyslav-Kuksiuk]

Do not strip comment-like text from the template string (``), and regex.

Examples to cover:

const pattern = /https?:\/\/example\.com\/docs/;
const help = `Keep // and /* markers */ in template text`;
const nested = `${format(value /* remove this real comment */)}`;

The filter should strip only real comments.
It should not truncate URLs, regex literals, or template literal content.