scim: Use setattr to set request.user as scim_client.
scim: Use setattr to set request.user as scim_client.

This is a type-unsafe workaround before we can fix the problem that
django_scim2 relies on request.user being present to authenticate
requests.

Signed-off-by: Zixuan James Li <74923aee05c23ca90566381b5d6b0cd9451b6054@gmail.com>

zulip/zulip,zulip/zulip,zulip/zulip,zulip/zulip,zulip/zulip,zulip/zulip,zulip/zulip