[PWGJE] Add hybrid response matrix (UE-sub reco x raw truth) to jetSpectraCharged

Add h2_jet_pt_mcd_rhosub_jet_pt_mcp_raw_matchedgeo_mcdetaconstraint
histogram for UE-subtracted reco pT vs raw particle-level pT.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: joonsukbae

PWGJE/Tasks/jetSpectraCharged.cxx

@@ -262,6 +262,7 @@ struct JetSpectraCharged {
     if (doprocessJetsMatchedAreaSub || doprocessJetsMatchedAreaSubWeighted) {
       registry.add("h2_jet_pt_mcd_jet_pt_mcp_matchedgeo_rhoareasubtracted_mcdetaconstraint", "corr pT mcd vs. corr cpT mcp;#it{p}_{T,jet}^{mcd} (GeV/#it{c});#it{p}_{T,jet}^{mcp} (GeV/#it{c})", {HistType::kTH2F, {jetPtAxisRhoAreaSub, jetPtAxisRhoAreaSub}}, doSumw2);
       registry.add("h2_jet_pt_mcd_jet_pt_mcp_matchedgeo_rhoareasubtracted_mcpetaconstraint", "corr pT mcd vs. corr cpT mcp;#it{p}_{T,jet}^{mcd} (GeV/#it{c});#it{p}_{T,jet}^{mcp} (GeV/#it{c})", {HistType::kTH2F, {jetPtAxisRhoAreaSub, jetPtAxisRhoAreaSub}}, doSumw2);
+      registry.add("h2_jet_pt_mcd_rhosub_jet_pt_mcp_raw_matchedgeo_mcdetaconstraint", "UEsub pT mcd vs. raw pT mcp;#it{p}_{T,jet}^{mcd} - #rho#it{A} (GeV/#it{c});#it{p}_{T,jet}^{mcp} (GeV/#it{c})", {HistType::kTH2F, {jetPtAxisRhoAreaSub, jetPtAxis}}, doSumw2);
       registry.add("h2_jet_pt_mcp_jet_pt_diff_matchedgeo_rhoareasubtracted", "jet mcp corr pT vs. corr delta pT / jet mcp corr pt;#it{p}_{T,jet}^{mcp} (GeV/#it{c}); (#it{p}_{T,jet}^{mcp} (GeV/#it{c}) - #it{p}_{T,jet}^{mcd} (GeV/#it{c})) / #it{p}_{T,jet}^{mcp} (GeV/#it{c})", {HistType::kTH2F, {jetPtAxisRhoAreaSub, {1000, -5.0, 5.0}}}, doSumw2);
       registry.add("h2_jet_pt_mcd_jet_pt_diff_matchedgeo_rhoareasubtracted", "jet mcd corr pT vs. corr delta pT / jet mcd corr pt;#it{p}_{T,jet}^{mcd} (GeV/#it{c}); (#it{p}_{T,jet}^{mcd} (GeV/#it{c}) - #it{p}_{T,jet}^{mcp} (GeV/#it{c})) / #it{p}_{T,jet}^{mcd} (GeV/#it{c})", {HistType::kTH2F, {jetPtAxisRhoAreaSub, {1000, -5.0, 5.0}}}, doSumw2);
       registry.add("h2_jet_pt_mcp_jet_pt_ratio_matchedgeo_rhoareasubtracted", "jet mcp corr pT vs. jet mcd corr pT / jet mcp corr pt;#it{p}_{T,jet}^{mcp} (GeV/#it{c}); #it{p}_{T,jet}^{mcd} (GeV/#it{c}) / #it{p}_{T,jet}^{mcp} (GeV/#it{c})", {HistType::kTH2F, {jetPtAxisRhoAreaSub, {1000, -5.0, 5.0}}}, doSumw2);
@@ -677,6 +678,7 @@ struct JetSpectraCharged {
           double dcorrpt = corrBasejetpt - corrTagjetpt;
           if (jetfindingutilities::isInEtaAcceptance(jetMCD, jetEtaMin, jetEtaMax, trackEtaMin, trackEtaMax)) {
             registry.fill(HIST("h2_jet_pt_mcd_jet_pt_mcp_matchedgeo_rhoareasubtracted_mcdetaconstraint"), corrBasejetpt, corrTagjetpt, weight);
+            registry.fill(HIST("h2_jet_pt_mcd_rhosub_jet_pt_mcp_raw_matchedgeo_mcdetaconstraint"), corrBasejetpt, jetMCP.pt(), weight);
             registry.fill(HIST("h2_jet_pt_mcd_jet_pt_diff_matchedgeo_rhoareasubtracted"), corrBasejetpt, dcorrpt / corrBasejetpt, weight);
           }
           if (jetfindingutilities::isInEtaAcceptance(jetMCP, jetEtaMin, jetEtaMax, trackEtaMin, trackEtaMax)) {