Coding - Migrate from exception to local status flag for dead loop handling (#817)

Coding - Migrate from exception to local status flag for dead loop handling (#817)

- Transfer_ProcessForFinder_0.cxx: Replace exception throw/catch with
  local status flag in Transferring() method
- Transfer_ProcessForTransient_0.cxx: Same changes for consistency
- Transfer_TransferDeadLoop.hxx: Mark exception class as deprecated with
  Standard_DEPRECATED attribute

The Transfer_TransferDeadLoop class is kept alive but marked as deprecated
for backward compatibility. Dead loop detection is now handled via local
status flags instead of exceptions, improving performance and code clarity.