draft: constants for reconstruction with unmitigated drift

see https://gitlab.cern.ch/lhcb/opg/-/issues/78#note_7902886 (with a fix of a typo for Ry of variation from drift)

	Tx [mm]	Ty [mm]	Tz [mm]	Rx [rad]	Ry [rad]	Rz [rad]
after closing	-0.085	-0.392	0.55	-0.00011	0.00021	0.00083
maximum drift	0.025	-0.006	-0.02	0.000017	0.000042	-0.00007
MC constants unmitigated drift = after closing + maximum drift	-0.06	-0.398	0.53	-0.000093	0.000252	0.00076