Fix asking if a partial GeneticBoundaryFeature is an horizon #708

Job	Run time
ubuntu-20-mpi	19m 5s
ubuntu-22-java11 (gcc 12, gcc-12, gcc-12, g++-12)	1h 15m 16s
Build wheels on windows-latest	46m 18s
ubuntu-22-java11 (gcc 10, gcc-10, gcc-10, g++-10)	23m 1s
Build wheels on ubuntu-latest	49m 17s
ubuntu-latest-valgrind-unitTest	37m 7s
windows-2022-staticLink-cs	46m 22s
Build wheels on macos-14	36m 50s
ubuntu-22-java11 (clang 15, clang-15, clang-15, clang++-15)	23m 27s
ubuntu-22-java11 (clang 13, clang-13, clang-13, clang++-13)	23m 26s
	6h 20m 9s

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