adds missed build method lint rule #4377

Job	Run time
build (stable, examples/counter)	1m 19s
build (stable, examples/marvel)	1m 3s
build (stable, examples/pub)	1m 10s
build (stable, examples/random_number)	1m 28s
build (stable, examples/stackoverflow)	1m 7s
build (stable, examples/todos)	1m 23s
build (stable, packages/riverpod)	2m 40s
build (stable, packages/riverpod/example)	1m 12s
build (stable, packages/flutter_riverpod)	1m 37s
build (stable, packages/flutter_riverpod/example)	1m 7s
build (stable, packages/hooks_riverpod)	1m 23s
build (stable, packages/hooks_riverpod/example)	1m 20s
build (stable, packages/riverpod_annotation)	1m 2s
build (stable, packages/riverpod_generator)	1m 31s
build (stable, packages/riverpod_generator/integration/build_yaml)	1m 55s
build (stable, website)	1m 20s
build (master, examples/counter)	1m 30s
build (master, examples/marvel)	2m 3s
build (master, examples/pub)	1m 30s
build (master, examples/random_number)	1m 44s
build (master, examples/stackoverflow)	1m 25s
build (master, examples/todos)	2m 0s
build (master, packages/riverpod)	2m 58s
build (master, packages/riverpod/example)	1m 33s
build (master, packages/flutter_riverpod)	1m 43s
build (master, packages/flutter_riverpod/example)	1m 46s
build (master, packages/hooks_riverpod)	1m 55s
build (master, packages/hooks_riverpod/example)	1m 25s
build (master, packages/riverpod_annotation)	1m 15s
build (master, packages/riverpod_generator)	1m 54s
build (master, packages/riverpod_generator/integration/build_yaml)	2m 9s
build (master, website)	1m 52s
	51m 19s

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