$cookie modifier - rules with $ as a special character doesn't work

[AdamWr]

It seems that it's impossible to use $ as a special character in regex rule with $cookie modifier.

Steps to reproduce

1. Add this rule to user filter:
   $cookie=/^CONSENT\$/,domain=google.com
2. Open https://www.google.com/

Expected behavior

CONSENT cookie should be removed.

Actual behavior

CONSENT cookie is not removed.

Rule like this works correctly:
$cookie=/^CONSENT/,domain=google.com

Screenshot:

Your environment

• AdGuard for Windows nightly 7.1.2894 (CL 1.4.150)

[vshlobinag]

core/pull-requests/1488