Reduce rates for Kshhgamma lines

In this MR, tightened the proton P and PT in the make_rad_loose_ph builder. Applied OWNPVVDRHO > 0.075 * mm in Hlt2RD_LbToKsppiGamma_DD, Hlt2RD_LbToKsppiGamma_LL, Hlt2RD_BuToKPhiGamma, Hlt2RD_BuToKpipiGamma lines. Also, removed OWNPVFDCHI2 > 50 rad_filter_ks0 filter.

The change in rates are:

Lines	Before	After
Hlt2RD_LbToKsppiGamma_DD	243.985	162.657
Hlt2RD_LbToKsppiGamma_LL	216.875	135.547
Hlt2RD_BuToKPhiGamma	176.211	135.547
Hlt2RD_BuToKpipiGamma	189.766	81.3283
Hlt2RD_BdToKspipiGamma_DD	40.6641	54.2188

The increase in rate in Hlt2RD_BdToKspipiGamma_DD seems to be coming from OWNPVFDCHI2 > 30 (reduced from 50) from rdbuilder_thor.