Add screenshot tests to the import-token e2e #32302

Job	Run time
IC Commit	26s
formatting	1m 33s
ShellCheck	23s
cargo-tests	9m 8s
spelling	4m 10s
svelte-lint	1m 30s
vitest-shard-1-of-2	6m 25s
vitest-shard-2-of-2	6m 43s
Config is as expected	29s
Can get NNS proposal args	0s
Migration test utilities work	17s
minor-version-bump-works	1m 40s
Release template	3m 37s
small-tests (ubuntu-20.04)	1m 34s
The nns-dapp npm and cargo versions should match	58s
small-tests (macos-13)	1m 47s
checks-pass	6s
	40m 46s

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