Fix building shared libraries on macOS with `--enable-libtorch` #3141

Job	Run time
mac / macsimple (macos-12)	10m 59s
mac / macports (macos-12)	14m 40s
mac / macsimple (macos-14)	4m 57s
docker / docker (fedora39)	19m 49s
mac / macports (macos-14)	3m 49s
codecheck / codecheck	44m 41s
docker / docker (rocky8)	22m 53s
mac / macports (+allmodules, macos-12)	23m 5s
conda / conda (ubuntu-20.04)	11m 47s
conda / conda (macos-12)	5m 57s
linux / linux (-doc-mpi-)	42m 14s
conda / conda (macos-14)	2m 21s
linux / linux (-mpi-)	52m 53s
linux / linux (-coverage-mpi-)	1h 4m 18s
linux / linux (-debug-)	29m 56s
linux / linux (-debug-mpi-)	42m 4s
linux / linux (-intel-)	47m 37s
linux / linux (-pycv-mpi-)	20m 15s
linux / linux (-nvhpc-mpi-)	55m 57s
	8h 40m 12s

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