Improve initializer template #248

Job	Run time
Tests (2.7, rails_6.1, stable)	39s
Tests (2.7, rails_7.0, stable)	36s
Tests (2.7, rails_7.1, stable)	34s
Tests (3.0, rails_6.1, stable)	25s
Tests (3.0, rails_7.0, stable)	24s
Tests (3.0, rails_7.1, stable)	27s
Tests (3.1, rails_6.1, stable)	28s
Tests (3.1, rails_7.0, stable)	31s
Tests (3.1, rails_7.1, stable)	29s
Tests (3.2, rails_7.0, stable)	33s
Tests (3.2, rails_7.1, stable)	24s
Tests (2.7, rails_edge, experimental)	37s
Tests (3.0, rails_edge, experimental)	30s
Tests (3.1, rails_edge, experimental)	25s
Tests (3.2, rails_edge, experimental)	24s
Tests (head, rails_6.1, experimental)	1m 24s
Tests (head, rails_7.0, experimental)	1m 19s
Tests (head, rails_7.1, experimental)	1m 23s
Tests (head, rails_edge, experimental)	1m 20s
Coverage	5s
	12m 57s

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