chore: adds a check for relative imports to CI (#6147) #34658

Job	Run time
cargo-tests	9m 32s
formatting	1m 36s
relative-imports	4s
vitest-shard-1-of-2	4m 7s
spelling	4m 15s
Config is as expected	29s
IC Commit	27s
Migration test utilities work	20s
minor-version-bump-works	1m 47s
ShellCheck	19s
Release template	3m 27s
svelte-lint	1m 31s
vitest-shard-2-of-2	4m 5s
Can get NNS proposal args	0s
small-tests (ubuntu-20.04)	1m 39s
small-tests (macos-13)	1m 47s
The nns-dapp npm and cargo versions should match	1m 2s
checks-pass	4s
	36m 31s

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