[FIX] base: Avoid error when keep_query is used outside an httprequest context

When the utility method `keep_query()` is used outside an httprequest
context (e.g. rendering a template from a unittest) the following
exception is throwng:
`RuntimeError: object unbound`

The above exception is caused by the method trying to retrieve
parameters from the HTTP request, even if the request object is unbownd.

This change ensures those parameters are retrieved only when exists,
making possible to use it outside the web client

Closes #18841

Closes #22942
Closes opw-815322

0 files changed, 0 insertions, 0 deletions