chore: rename protobuf field according to convention #33582

Job	Run time
changes	14s
Build & cache Go code	3m 16s
Ensure Go modules synchronicity	31s
Check changes to generated code	4m 44s
Build, test & lint UI code	1m 37s
Lint Go code	3m 29s
Run unit tests for Go packages	5m 8s
Run end-to-end tests (v1.30.2, true)	50m 6s
Run unit tests with -race for Go packages	8m 58s
Run end-to-end tests (v1.29.6, false)	49m 47s
Run end-to-end tests (v1.28.11, false)	50m 14s
Run end-to-end tests (v1.27.15, false)	50m 39s
E2E Tests - Composite result	1s
Process & analyze test artifacts	42s
	3h 49m 26s

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