[sql-4] accounts: remove last usages of `UpdateAccount` #1992

Job	Run time
backend build on ubuntu-latest	8m 26s
check commits	4m 45s
frontend tests on ubuntu-latest	2m 26s
RPC proto compilation check	6m 37s
backend build on windows-latest	13m 48s
frontend tests on windows-latest	7m 59s
integration test	20m 32s
backend build on macOS-latest	5m 42s
frontend tests on macOS-latest	2m 28s
check release notes updated	0s
lint	5m 37s
run unit tests (unit-race)	4m 9s
run unit tests (unit)	4m 32s
	1h 27m 1s

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