Registry connections (SSH, remote URL, cloud) resolve their backend through
connectRegistryBackend(), which never registered the profile's WSL path
bridge state. isWslBridgeActive() then fell back to its default (true), so
POSIX paths from a remote Linux host hit resolveDefaultWslDistro() and
spawned wsl.exe - visible as a flashing black console window on machines
where WSL has no distro installed (and an install-prompt risk on fully
WSL-less machines).
The v1 path (ensureBackend) already disables the bridge for remote
connections at all three of its return sites. Mirror that for pooled
registry backends: SSH and remote/cloud connections are always
remote-hosted, so their profiles must be bridge-inactive.
Refs #102868, mirrors the #66433/#66447 guard for the primary connection.