net: http_server: fix URL matching with '?' character in resource

Fixes #84198.

If a '?' character is used as part of a wildcard resource, do not treat
this as the end of the string when comparing with a path from the HTTP
request. Only the path from the HTTP request may be terminated by '?'
(in the case of a request with query parameters).

Signed-off-by: Matt Rodgers <mrodgers@witekio.com>