PCT encoded varname for form style query expansion with list value

[vietj]

The extended tests contain a test for pct encoded varname for form style query expansion with string value:

["/lookup{?Stra%C3%9Fe}", "/lookup?Stra%C3%9Fe=Gr%C3%BCner%20Weg"],

I believe that this test should also exist for lists, i.e have in variables:

"Stra%C3%9Fe"  : ["Grüner",  "Weg"]

and

["/lookup{?Stra%C3%9Fe_list}", "/lookup?Stra%C3%9Fe_list=Gr%C3%BCner&Stra%C3%9Fe_list=Weg"],