fix: spurious export in the `src/vault/types.ts` #357

Job	Run time
Check / Build	33s
Check / Lint	50s
Build / Pull Request	7s
Check / Matrix	5s
Check / Test (tests/audit)	35s
Check / Test (tests/bootstrap)	31s
Check / Test (tests/http)	31s
Check / Test (tests/claims)	29s
Check / Test (tests/identities)	31s
Check / Test (tests/gestalts)	58s
Check / Test (tests/discovery)	1m 43s
Check / Test (tests/ids)	27s
Check / Test (tests/notifications)	1m 7s
Check / Test (tests/acl)	31s
Check / Test (tests/git)	31s
Check / Test (tests/network)	32s
Check / Test (tests/sigchain)	58s
Check / Test (tests/tokens)	31s
Check / Test (tests/nodes)	2m 57s
Check / Test (tests/sessions)	28s
Check / Test (tests/utils)	31s
Check / Test (tests/status)	35s
Check / Test (tests/index.test.ts)	29s
Check / Test (tests/schema)	28s
Check / Test (tests/vaults)	4m 20s
Check / Test (tests/utils.test.ts)	27s
Check / Test (tests/workers)	26s
Check / Test (tests/validation)	27s
Check / Test (tests/scratch.test.ts)	25s
Check / Test (tests/keys)	1m 1s
Check / Test (tests/tasks)	44s
Check / Test (tests/PolykeyAgent.test.ts)	39s
Check / Test (tests/PolykeyClient.test.ts)	39s
Check / Test (tests/client)	3m 55s
Check / Coverage	19s
Integration / Merge	11s
	30m 31s

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