B-physics trigger: use only opposite-sign combinations for HLT_mu6_bJpsimutrk_MuonTrkPEB_L1MU5VF like chains (ATR-24377)
This MR
- add possibility to reject same-sign track combinations at TrigMultiTrkComboHypo level;
- auxiliary MuonTrkPEB chains are configured to build only opposite-sign muon+track combinations
CC: @abarton