AO3-5578 ActiveStorage copy script performance fixes #4879

Job	Run time
rake db:otwseed	1m 8s
rspec spec/controllers	12m 12s
rspec spec/models	6m 18s
rspec --exclude-pattern 'spec/{controllers,models}/*/.rb'	8m 54s
cucumber features/admins	7m 27s
cucumber features/bookmarks	4m 42s
cucumber features/collections	7m 2s
cucumber features/comments_and_kudos	6m 45s
cucumber features/gift_exchanges	6m 50s
cucumber features/importing	2m 47s
cucumber features/other_a	10m 41s
cucumber features/other_b	6m 41s
cucumber features/prompt_memes_a	3m 48s
cucumber features/prompt_memes_b	4m 19s
cucumber features/prompt_memes_c	5m 11s
cucumber features/search	7m 36s
cucumber features/tag_sets	3m 11s
cucumber features/tags_and_wrangling	6m 30s
cucumber features/users	5m 5s
cucumber features/works	13m 34s
	2h 10m 41s

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