tests: implement unit test for transactions that initialize scripts #1411

Job	Run time
build	6m 49s
deploy-rustdoc	0s
deploy-argocd	21s
devshell-tests (nixos)	20s
local-environment-tests	6m 18s
devshell-tests (macos)	43s
local-environment-tests-post-merge	0s
upload-chain-specs	0s
post-merge-actions-complete	0s
local-environment-tests-post-merge-alert	0s
argocd-tests	0s
teardown-argocd	0s
local-environment-tests-alert	6s
pre-merge-checks-complete	4s
	14m 41s

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