Discovery: add H2Ta (1TaH2-1)

active_challenge.csv

@@ -1014,3 +1014,4 @@ OSC-02053,2HNi-1,2HNi-1,H2Ni2,discovery,light,,ok,0.41145,3.2916,8.0,0.0409,1.15
 OSC-02055,2HPd-1,2HPd-1,H2Pd2,discovery,light,,ok,0.48889,3.91112,8.0,0.4311,1.0596,,0.0556,0.36061,gaussian_dos_scf_mesh,0.04523,,
 OSC-02056,1ReH2-1,1ReH2-1,H2Re,discovery,light,,ok,0.30895,2.4716,8.0,-0.6012,1.0725,,0.0556,0.37781,gaussian_dos_scf_mesh,0.04523,,
 OSC-02057,1RuH2-1,1RuH2-1,H2Ru,discovery,light,,ok,0.28807,2.30456,8.0,-1.1538,1.9586,,0.9444,0.40911,gaussian_dos_scf_mesh,0.00283,,
+OSC-02058,1TaH2-1,1TaH2-1,H2Ta,discovery,light,,ok,0.17408,1.39264,8.0,-0.5046,0.9946,,0.0,0.64923,gaussian_dos_scf_mesh,0.03844,,