Fix nsw calib alg

This MR fixes a bug in the handling of the detId in the NswCalibDbAlg that prevented the code from reading the pdo calibration constants correctly.

@cheidegg @sangelid can you please have a look if this fix is doing the correct thing?

For the review: The first commit is just some code formatting while the second commit contains the actual changes

cc @iodice @rosati @lucam