[webrequest] Lazy-load search_state
- The update_search_state function will hit the session data only if __mode is
present in the form.
- set_search_state keep the same semantics
- Direct access to search_state in the session data is changed by an access to
the new property.
Closes #4875761
[MESSAGES CONTROL]
disable-msg = C0301
[VARIABLES]
# Enable / disable this checker
enable-variables = yes
additional-builtins = _, display_name
[BASIC]
required-attributes=
attr-rgx = (w|[a-z_][a-z0-9_]{2,30})
variable-rgx = (w|[a-z_][a-z0-9_]{2,30})$
argument-rgx = (w|[a-z_][a-z0-9_]{2,30})$
[TYPECHECK]
generated-members=debug,info,notice,warning,error,critical,exception