Update VBFHH cross sections to XSDB numbers

[cmantill]

Most numbers agree with interpolation except for:

  "VBFHHto4B_CV-m2p12_C2V-3p87_C3-m5p96": 0.056818 * BR_HBB * BR_HBB, # 0.01917 (0.672 from xsecdb !!)

[jmduarte]

Let's synchronize with inference:

https://gitlab.cern.ch/hh/tools/inference/-/blob/feature/run3/dhi/models/hh_model_run23.py#L322-384

which says it should be 0.006719 [pb] * BR_HBB * BR_HBB (so it looks like xsecdb if it's in fb)

# explicit run 3 ggf samples
# NNLO cross sections from https://twiki.cern.ch/twiki/bin/view/LHCPhysics/LHCHWGHH?rev=98
add_ggf_sample(kl=1.0, kt=1.0, xs=0.03413, label="ggHH_kl_1_kt_1_13p6TeV")
add_ggf_sample(kl=0.0, kt=1.0, xs=0.07575, label="ggHH_kl_0_kt_1_13p6TeV")
add_ggf_sample(kl=2.45, kt=1.0, xs=0.01492, label="ggHH_kl_2p45_kt_1_13p6TeV")
add_ggf_sample(kl=5.0, kt=1.0, xs=0.09965, label="ggHH_kl_5_kt_1_13p6TeV")

# explicit run 3 vbf samples (different basis of points)
add_vbf_sample(CV=1.0, C2V=1.0, kl=1.0, xs=0.001874, label="qqHH_CV_1_C2V_1_kl_1_13p6TeV")
add_vbf_sample(CV=1.0, C2V=1.0, kl=2.0, xs=0.001593, label="qqHH_CV_1_C2V_1_kl_2_13p6TeV")
add_vbf_sample(CV=1.0, C2V=0.0, kl=1.0, xs=0.029320, label="qqHH_CV_1_C2V_0_kl_1_13p6TeV")
add_vbf_sample(CV=1.0, C2V=2.0, kl=1.0, xs=0.015710, label="qqHH_CV_1_C2V_2_kl_1_13p6TeV")
add_vbf_sample(CV=1.74, C2V=1.37, kl=14.4, xs=0.3954, label="qqHH_CV_1p74_C2V_1p37_kl_14p4_13p6TeV")
add_vbf_sample(CV=-0.012, C2V=0.03, kl=10.2, xs=0.00001257, label="qqHH_CV_m0p012_C2V_0p03_kl_10p2_13p6TeV")
add_vbf_sample(CV=-0.758, C2V=1.44, kl=-19.3, xs=0.3550, label="qqHH_CV_m0p758_C2V_1p44_kl_m19p3_13p6TeV")
add_vbf_sample(CV=-0.962, C2V=0.959, kl=-1.43, xs=0.001114, label="qqHH_CV_m0p962_C2V_0p959_kl_m1p43_13p6TeV")
add_vbf_sample(CV=-1.21, C2V=1.94, kl=-0.94, xs=0.003753, label="qqHH_CV_m1p21_C2V_1p94_kl_m0p94_13p6TeV")
add_vbf_sample(CV=-1.6, C2V=2.72, kl=-1.36, xs=0.01156, label="qqHH_CV_m1p6_C2V_2p72_kl_m1p36_13p6TeV")
add_vbf_sample(CV=-1.83, C2V=3.57, kl=-3.39, xs=0.01665, label="qqHH_CV_m1p83_C2V_3p57_kl_m3p39_13p6TeV")
add_vbf_sample(CV=-2.12, C2V=3.87, kl=-5.96, xs=0.006719, label="qqHH_CV_m2p12_C2V_3p87_kl_m5p96_13p6TeV")