Install auth_signup, go to /web/login, 500 Internal Server Error.
auth_signup extends the /web/login template and in this extension calls
`keep_query()` which has been wrongly moved from base to http_routing in
commit 880954ebfc. Here, we restored `keep_query()` in the base module
but moved in ir_qweb.
closes odoo/odoo#87491
Related: odoo/enterprise#25754
Signed-off-by: Julien Castiaux <juc@odoo.com>