Fix restore_from_stronghold_snapshot() with same source and target path #2234
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Description of change
Fix restore_from_stronghold_snapshot() for the case when source and target path are the same. Without this change std::fs::copy() truncates the backup file, resulting in
Error: Stronghold(Client(ClientDataNotPresent))
Port 8084 seems to be used by Mono actions/runner-images#2820, so replaced this port for the dashboard
Type of change
How the change has been tested
Added test