Fix dimensionality issue when binary classification outputs 1D instea… #3687

Job	Run time
C++ Test Coverage (gets coverage of main branch, currently not main branch because no C++ on main)	24m 44s
Mypy Type Checks	6m 23s
format	9s
Build + Test (C++) (Release, gcc, g++, 11)	1s
Build + Test (C++) (Release, clang, clang++, 14)	1s
Pre-commit Checks	27s
pylint	4m 9s
Build + Test (C++) (Release, clang, clang++, 17, true)	1s
tidy	19m 22s
unittests	12m 14s
Build + Test (C++) (Debug, gcc, g++, 11)	1s
Build + Test (C++) (Debug, gcc, g++, 12)	1s
Build + Test (C++) (Debug, clang, clang++, 14)	1s
Build + Test (C++) (Debug, clang, clang++, 17, true)	1s
Build + Test (C++) (clang, clang++, 14, Tsan)	1s
Build + Test (C++) (clang, clang++, 14, Asan)	1s
integrationtests-release	0s
integrationtests-tsan	0s
integrationtests-asan	0s
integrationtests-debug	0s
dockerized-unittests	0s
Comment Coverage Results	0s
	1h 7m 37s

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