feat(prime): isolate native instance ownership #618

Job	Run time
Rust	24s
Test Server 1	2m 33s
Check	2m 52s
Test Server 2	3m 1s
Prime Background Platform (ubuntu-24.04)	54s
Release Smoke	1m 21s
Test	6m 0s
Desktop Prime Packaged Smoke (win)	6m 40s
Desktop Prime Packaged Smoke (linux)	3m 0s
Test Server 3	3m 17s
	30m 2s

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