fix: enforce admin-only flow deployment authorization #2472

Job	Run time
No process-global os.environ writes in components	11s
Migration table - bare-name uniqueness	10s
Router trust - no install/uninstall under /api/v1/extensions	12s
BUNDLE_API.md changelog gate	1m 16s
Migration table - append-only	1m 20s
Freeze lfx/components	8s
	3m 17s

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