Change `INVALID_OBJECT_MESSAGE` to omit `to_h` and `to_unsafe_h` #1815

Job	Run time
postgres_test	1m 16s
lint	32s
mongodb_test (gemfiles/mongoid_6.gemfile)	1m 5s
javascript_test	53s
mongodb_test (gemfiles/mongoid_7.gemfile)	1m 2s
system_tests	54s
test (Gemfile, 3.1)	50s
test (gemfiles/rails_5.2.gemfile, 2.7)	1m 0s
test (gemfiles/rails_7.0.gemfile, 3.1)	1m 22s
test (gemfiles/rails_master.gemfile, 3.1)	1m 35s
test (gemfiles/rails_7.0.gemfile, 3.2)	55s
test (gemfiles/rails_master.gemfile, 3.2)	1m 24s
	12m 48s

Provide feedback