feat(desktop): SSRF hardening + shared @sim/security/ssrf (re-home of #5763) #22774

Job	Run time
Test and Build / Lint and Test	33s
Test and Build / Build App	3m 19s
Detect Version	0s
Deploy Trigger.dev (Dev)	0s
Build AMD64	0s
Build ARM64 (GHCR Only)	0s
Check Docs Changes	0s
Build Dev ECR	0s
Check Desktop Signing Secrets	0s
Migrate Dev DB	-6s
Migrate DB	0s
Promote Images	0s
Process Docs	0s
Create GHCR Manifests	0s
Create GitHub Release	0s
Desktop Release	-1s
	3m 45s

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