Migrate internal runtime state to Fiber storage #2608

Job	Run time
javascript_test	28s
lint	39s
postgres_test (gemfiles/rails_master.gemfile, 3.3, 1)	2m 9s
mongodb_test (gemfiles/mongoid_6.gemfile)	2m 1s
postgres_test (gemfiles/rails_7.1_postgresql.gemfile, 3.3)	2m 5s
system_tests	2m 23s
mongodb_test (gemfiles/mongoid_7.gemfile)	1m 53s
test (Gemfile, 3.2)	1m 54s
test (Gemfile, 2.7)	1m 45s
test (gemfiles/rails_7.0.gemfile, 3.1)	2m 15s
test (gemfiles/rails_master.gemfile, 3.2)	2m 41s
test (gemfiles/rails_7.0.gemfile, 3.2)	1m 59s
test (gemfiles/rails_7.1.gemfile, 3.3)	2m 6s
test (gemfiles/rails_master.gemfile, 3.3, 1)	2m 24s
test (gemfiles/rails_master.gemfile, 3.3, 1, 1)	2m 25s
	29m 7s

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