Don't check cookie value if cookie was deleted (matomo-org#17830)

* don't check cookie value if cookie was deleted

* add test that ensures no error is logged when setCookieDomain is called w/ valid input

Co-authored-by: diosmosis <[email protected]>

Author: sgiehl

js/piwik.js

@@ -2449,7 +2449,7 @@ if (typeof window.Matomo !== 'object') {
                     ';SameSite=' + sameSite;
 
                 // check the cookie was actually set
-                if (getCookie(cookieName) !== value) {
+                if ((!msToExpire || msToExpire >= 0) && getCookie(cookieName) !== value) {
                     var msg = 'There was an error setting cookie `' + cookieName + '`. Please check domain and path.';
                     logConsoleError(msg);
                 }