Add test for empty list #33019

Job	Run time
spelling	3m 59s
cargo-tests	9m 32s
ShellCheck	20s
formatting	1m 38s
IC Commit	25s
svelte-lint	35s
vitest-shard-1-of-2	26s
vitest-shard-2-of-2	27s
Can get NNS proposal args	0s
Config is as expected	27s
Migration test utilities work	21s
minor-version-bump-works	1m 41s
Release template	3m 17s
small-tests (ubuntu-20.04)	1m 43s
The nns-dapp npm and cargo versions should match	58s
small-tests (macos-13)	1m 43s
checks-pass	3s
	27m 35s

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