switch GarageDoor to LeakageSemantics #788

Job	Run time
docker-master	1h 31m 33s
publish-standalone-dry-run	13s
test-standalone (master, dev, default)	1m 24s
build-wasm-of-ocaml (master, 4.14.1)	17m 9s
build-js-of-ocaml (master, 4.11.1)	5m 35s
generated-files (master)	24m 35s
validate-docker-master	3m 40s
standalone-haskell (master)	46m 44s
test-amd64	2h 16m 48s
deploy-js-wasm-of-ocaml	31s
docker-check-all	1s
	5h 28m 13s

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