internal/commands/server: prevent test panic on timeout #14388

Job	Run time
set-product-version	8s
product-metadata	29s
generate-metadata-file	22s
verify-product-metadata	4s
Go 1.23.1 linux arm build	6m 48s
Go 1.23.1 linux arm64 build	3m 38s
Go 1.23.1 darwin amd64 build	7m 46s
Go 1.23.1 linux 386 build	6m 9s
Go 1.23.1 darwin arm64 build	7m 11s
Go 1.23.1 linux amd64 build	6m 26s
Go 1.23.1 freebsd 386 build	5m 47s
Go 1.23.1 freebsd amd64 build	6m 42s
Go 1.23.1 freebsd arm build	5m 41s
Go 1.23.1 windows 386 build	5m 44s
Go 1.23.1 windows amd64 build	7m 6s
Go 1.23.1 netbsd 386 build	2m 52s
Go 1.23.1 netbsd amd64 build	3m 27s
Go 1.23.1 netbsd arm build	2m 56s
Go 1.23.1 openbsd 386 build	5m 51s
Go 1.23.1 openbsd amd64 build	6m 32s
Go 1.23.1 openbsd arm build	5m 53s
Go 1.23.1 solaris amd64 build	6m 38s
Docker arm build	1m 15s
Docker arm64 build	52s
Docker 386 build	55s
Docker amd64 build	1m 26s
bats / CLI tests	12m 54s
Enos / setup	53s
Enos / Integration (e2e_aws builder:crt)	15m 55s
Enos / Integration (e2e_database)	5m 49s
Enos / Integration (e2e_docker_base builder:crt)	38m 37s
Enos / Integration (e2e_docker_base_plus builder:crt)	8m 52s
Enos / Integration (e2e_docker_base_with_vault builder:crt)	5m 24s
Enos / Integration (e2e_docker_base_with_worker builder:crt)	4m 27s
Enos / Integration (e2e_docker_worker_registration_controller_led builder:crt)	4m 7s
Enos / Integration (e2e_docker_worker_registration_worker_led builder:crt)	4m 31s
	3h 30m 7s

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