fix memory leak and summary output bug for MultiSensitiveDetector #858

Job	Run time
build (ubuntu-latest, none)	17m 7s
build (ubuntu-latest, rtk)	1h 0m 54s
build (ubuntu-latest, torch)	17m 16s
build (ubuntu-latest, optic)	17m 33s
build (macos-latest, none)	29m 42s
build (macos-latest, rtk)	32m 9s
build (macos-latest, torch)	15m 29s
build (macos-latest, optic)	21m 15s
benchmarks (t1_edep_profiles)	34m 26s
benchmarks (t2_edep_vox)	31m 22s
benchmarks (t3_range_e+)	24m 13s
benchmarks (t4_necr)	23m 4s
benchmarks (t6_dpk)	29m 15s
benchmarks (t7_garf)	31m 42s
benchmarks (t8_LETActor)	20m 23s
benchmarks (t10_SpectroGamma)	1h 34m 19s
benchmarks (t11_EMField)	37m 46s
benchmarks (t12_tessellated_volume)	23m 45s
benchmarks (t13_phsp)	30m 55s
benchmarks (t15_optical)	26m 6s
benchmarks (t16_decay)	29m 19s
benchmarks (t17_extended_source)	32m 19s
benchmarks (t18_movement_benchmark)	24m 28s
benchmarks (t19_acollinearity)	25m 13s
benchmarks (t20_digi_adder)	31m 1s
benchmarks (t22_merged_actor)	23m 5s
benchmarks (t23_digi_readout)	22m 42s
benchmarks (t26_CoinSorter)	25m 3s
benchmarks (t27_Hits_2SD)	29m 11s
benchmarks (t28_Singles_2SD)	23m 41s
benchmarks (t29_optical_digi)	23m 46s
benchmarks (t30_dna)	23m 59s
	15h 32m 28s

Provide feedback