[#42136521] Correctly handle changes to the volume files

Remove any DbFile references before updating the PlateVolume instance,
as this ensures that there will only ever be one associated.
[#42042735] Update TagLibraryLayout seeds to include Pulldown defaults
Merge pull request #716 from seandunn/42042735_update_seeds_for_pulldown

[#42042735] Update TagLibraryTemplate seeds to include Pulldown defaults
Merge pull request #715 from mattdenner/42136521_plate_volume_information_is_not_being_updated

[#42136521] Correctly handle changes to the volume files