docs: add comment about `null` owner type #2583

Job	Run time
prepare	1m 7s
prepare-win32	4m 13s
e2e-cypress	6m 36s
e2e (1/8)	4m 36s
packages (@slicemachine/plugin-kit)	1m 20s
e2e (2/8)	4m 12s
prettier	56s
packages (@slicemachine/manager)	2m 20s
e2e (3/8)	6m 39s
packages (@slicemachine/init)	1m 20s
e2e (4/8)	3m 39s
packages (slice-machine-ui)	2m 22s
e2e (5/8)	7m 34s
packages (start-slicemachine)	1m 10s
e2e (6/8)	4m 26s
packages (@slicemachine/adapter-next)	1m 17s
e2e (7/8)	6m 41s
packages (@slicemachine/adapter-nuxt)	1m 20s
e2e (8/8)	5m 1s
packages (@slicemachine/adapter-nuxt2)	1m 16s
packages (@slicemachine/adapter-sveltekit)	1m 19s
packages (@slicemachine/e2e)	1m 16s
packages-win32 (@slicemachine/plugin-kit)	2m 20s
packages-win32 (@slicemachine/manager)	3m 40s
packages-win32 (@slicemachine/init)	2m 20s
packages-win32 (slice-machine-ui)	2m 55s
packages-win32 (start-slicemachine)	1m 58s
packages-win32 (@slicemachine/adapter-next)	2m 31s
packages-win32 (@slicemachine/adapter-nuxt)	2m 15s
packages-win32 (@slicemachine/adapter-nuxt2)	2m 28s
packages-win32 (@slicemachine/adapter-sveltekit)	2m 32s
e2e-merge-reports	46s
	1h 34m 25s

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