feat(portfolio): add getTopTokens utility for TokensCard (#6153) #34648

Job	Run time
cargo-tests	9m 36s
formatting	1m 52s
IC Commit	23s
ShellCheck	21s
spelling	3m 59s
svelte-lint	1m 31s
vitest-shard-1-of-2	4m 7s
vitest-shard-2-of-2	4m 8s
Config is as expected	43s
Can get NNS proposal args	0s
Migration test utilities work	17s
minor-version-bump-works	1m 56s
Release template	3m 28s
small-tests (ubuntu-20.04)	1m 44s
The nns-dapp npm and cargo versions should match	57s
small-tests (macos-13)	2m 15s
checks-pass	4s
	37m 21s

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