fix a bug; exclude DBM byte stream error monitoring (ATLASRECTS-6351)
This is bug-fix. The index array exceeds the give array size due to extra index from DBM.
The error mentioned here is just a purpose of the error monitoring which is not used in reconstruction. (the another PixelByteStreamErr is safely used in the reconstruction by the way.) Thus, the DBM is excluded in the error monitoring since this error (FEI4; service record / error counter) is rather hardware-level monitoring.