When Windows Smart App Control or an Application Control policy blocks the
embedded Python runtime's _ssl module, the fastapi/uvicorn import in the
dashboard startup fails with the "DLL load failed ... _ssl" signature, but
the handler printed the generic missing-deps message — so users looped on
`hermes pm install` / `hermes pm repair`, which can never lift a policy
block.
Detect the signature and say so instead: the runtime's DLL is blocked,
repair cannot fix it, and the recovery options are a trusted system
Python, an IT exemption, or the CLI/gateway (which use the system Python).
Fixes#63796
Co-authored-by: liuhao1024 <sunsky.lau@gmail.com>
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