embed: add `GRPCAdditionalServerOptions` config #13996

Job	Run time
arm64 / test (linux-arm64-integration-1-cpu)	16m 38s
amd64 / test (linux-amd64-integration-1-cpu)	14m 18s
arm64 / test (linux-arm64-integration-2-cpu)	15m 22s
amd64 / test (linux-amd64-integration-2-cpu)	13m 24s
arm64 / test (linux-arm64-integration-4-cpu)	15m 23s
amd64 / test (linux-amd64-integration-4-cpu)	14m 14s
amd64 / test (linux-amd64-unit-4-cpu)	3m 54s
arm64 / test (linux-arm64-unit-4-cpu)	4m 46s
arm64 / test (linux-386-unit-1-cpu)	15s
amd64 / test (linux-386-unit-1-cpu)	2m 11s
	1h 40m 25s

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