[FIX] google_calendar: send the request URL for the redirect_uri

Before this commit: if a different `web.base.url` is set with
`web.base.url.freeze`, during the first synchronization of Google
calendar it will show a mismatch URL error. The problem is that we
send the `redirect_uri` based on the `web.base.url` in the
`_get_authorize_uri` function.

The solution is to use the request root URL instead.

opw-3175539

closes odoo/odoo#114482

X-original-commit: 8f94f2ec864bdb54e3deb9b853a2720c5c92f592
Signed-off-by: Arnaud Joset <arj@odoo.com>
Signed-off-by: Pedram Bi Ria (pebr) <pebr@odoo.com>
Signed-off-by: Thibault Delavallee (tde) <tde@openerp.com>

addons/google_account/controllers/main.py

@@ -17,7 +17,7 @@ class GoogleAuth(http.Controller):
         url_return = state.get('f')
 
         if kw.get('code'):
-            base_url = request.env.user.get_base_url()
+            base_url = request.httprequest.url_root.strip('/') or request.env.user.get_base_url()
             access_token, refresh_token, ttl = request.env['google.service']._get_google_tokens(
                 kw['code'],
                 service,