don't report error on notimplemented, might fix go crash (#3045) #14048

Job	Run time
check_if_release_branch	1s
towncrier_check	8s
changed_files	8s
build mirrord CLI	0s
lint	3m 21s
integration_tests	5m 50s
macos_tests	11m 6s
test_agent	3m 21s
check-rust-docs	1m 3s
test_agent_image	6m 36s
test_cli_image	7m 13s
lint_markdown	0s
vscode_e2e_on_release_branch	0s
e2e (docker)	11m 51s
intellij_e2e_on_release_branch	0s
e2e (containerd)	11m 30s
ci	1s
	1h 2m 9s

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