Hide the banner behind the feature flag #34245

Job	Run time
cargo-tests	9m 39s
Config is as expected	28s
Can get NNS proposal args	0s
formatting	1m 36s
IC Commit	26s
Migration test utilities work	20s
minor-version-bump-works	1m 37s
Release template	3m 21s
ShellCheck	21s
small-tests (ubuntu-20.04)	1m 40s
svelte-lint	1m 36s
small-tests (macos-13)	2m 22s
spelling	3m 56s
The nns-dapp npm and cargo versions should match	56s
vitest-shard-1-of-2	3m 57s
vitest-shard-2-of-2	4m 5s
checks-pass	3s
	36m 23s

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