[FIX] website: website.redirect keep params during redirect

Before this commit if /foo redirect to /bar?a=1

/foo?debug=1 was redirectd to /bar?a=1

After this commit,

/foo?debug=1 is redirected to /bar?a=1&debug=1

addons/website/models/ir_http.py

@@ -20,6 +20,7 @@ from odoo.tools.safe_eval import safe_eval
 from odoo.osv.expression import FALSE_DOMAIN
 
 from odoo.addons.http_routing.models.ir_http import ModelConverter, _guess_mimetype
+from odoo.addons.portal.controllers.portal import _build_url_w_params
 
 logger = logging.getLogger(__name__)
 
@@ -145,7 +146,7 @@ class Http(models.AbstractModel):
 
         redirect = cls._serve_redirect()
         if redirect:
-            return request.redirect(redirect.url_to, code=redirect.type)
+            return request.redirect(_build_url_w_params(redirect.url_to, request.params), code=redirect.type)
 
         return False