[Test:API] Add clear birthday test
[Test:API] Add clear birthday test

armchair-philosophy/misskey,syuilo/Misskey,Tosuke/misskey,armchair-philosophy/misskey,Tosuke/misskey,Tosuke/misskey,armchair-philosophy/misskey,syuilo/Misskey,Tosuke/misskey,ha-dai/Misskey,armchair-philosophy/misskey,ha-dai/Misskey,Tosuke/misskey