chore: Add `&Util.end_of_service/1` #5693

Job	Run time
Build application and assets	5m 55s
Build Docker image	7m 5s
file_changes	5s
Formatting / Elixir	3m 5s
Linting / Elixir	3m 48s
Linting / TypeScript	37s
Formatting / JavaScript & TypeScript	38s
Unit tests / JavaScript / Mocha	38s
Unit tests / JavaScript & TypeScript / Jest	2m 17s
Linting / JavaScript	33s
Linting / CSS	22s
Type checks / TypeScript	37s
Type checks / Elixir	3m 59s
Unit tests / Elixir / mix coveralls.html	58s
	30m 37s

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