collate not support Unicode Variation Selector

Hi, I hope supported Unicode Variation Selector on collate.

D209007=# create table ivstesticu (
D209007(# moji text
D209007(# );
D209007=# create table ivstest (
D209007(# moji text  collate "ja-x-icu" CONSTRAINT firstkey PRIMARY KEY D209007(# );
D209007=# insert into ivstest (moji) values ( U&'\+003436' || U&'\+0E0101' || U&'\+00304D');
D209007=# insert into ivstest (moji) values ( U&'\+003436' || U&'\+00304D');
D209007=# select moji from ivstest where moji like '%' || U&'\+00304B' || '%';
-------------
㐶󠄁き
㐶き
(2 行)

expected
-------------
㐶き
(1 行)


Best regards,