AO3-6204 Allow certain admins to remove non-default orphan pseuds from orphaned works #4915

Job	Run time
rake db:otwseed	1m 14s
rspec spec/controllers	13m 59s
rspec spec/models	5m 36s
rspec --exclude-pattern 'spec/{controllers,models}/*/.rb'	9m 36s
cucumber features/admins	7m 56s
cucumber features/bookmarks	4m 32s
cucumber features/collections	6m 46s
cucumber features/comments_and_kudos	6m 41s
cucumber features/gift_exchanges	7m 13s
cucumber features/importing	2m 41s
cucumber features/other_a	11m 34s
cucumber features/other_b	7m 0s
cucumber features/prompt_memes_a	4m 1s
cucumber features/prompt_memes_b	3m 41s
cucumber features/prompt_memes_c	5m 4s
cucumber features/search	7m 25s
cucumber features/tag_sets	3m 16s
cucumber features/tags_and_wrangling	6m 59s
cucumber features/users	5m 16s
cucumber features/works	13m 9s
	2h 13m 39s

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