Update grid.cc #8039

Job	Run time
classicmode_1d_3dgrid	5m 22s
classicmode_3d	7m 55s
kilonova_1d_1dgrid	1m 49s
kilonova_1d_3dgrid	5m 33s
kilonova_2d_2dgrid	1m 42s
kilonova_2d_2dgrid_barnesthermalisation	1m 33s
kilonova_2d_2dgrid_expansionopac	1m 46s
kilonova_2d_2dgrid_xcomgammaphotoion	2m 38s
kilonova_2d_3dgrid	7m 6s
nebular_1d_3dgrid	11m 49s
nebular_1d_3dgrid_limitbfest	13m 34s
classicmode_1d_3dgrid testmode ON	16m 24s
classicmode_3d testmode ON	24m 13s
kilonova_1d_1dgrid testmode ON	1m 39s
kilonova_1d_3dgrid testmode ON	10m 45s
kilonova_2d_2dgrid testmode ON	48s
kilonova_2d_2dgrid_barnesthermalisation testmode ON	50s
kilonova_2d_2dgrid_expansionopac testmode ON	3m 57s
kilonova_2d_2dgrid_xcomgammaphotoion testmode ON	51s
kilonova_2d_3dgrid testmode ON	20m 53s
nebular_1d_3dgrid testmode ON	25m 6s
nebular_1d_3dgrid_limitbfest testmode ON	25m 6s
combine_checksums	15s
	3h 11m 34s

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