Copy F (geomag) to F (legacy) fixed:

The EdgeFactory (earthworm client) does not have, and will probably never have, the ability to read floating point miniseed blocks. When we reverted the processing recently to stop making an integer copy of the 1-second data from ObsRio (which seriously confused Edge for reasons we still dont understand), this broke geomag-filter. The solution was to copy F data separately, using MiniSeedFactory as the input factory.