Darwin bindists do not install wrappers correctly
We are using
cp -P to copy symlinks for the wrappers in to the correct place but on darwin this was following the symlink and copying the wrapper.
cp utility on macs ignores
-R is also passed so the fix is to pass both
-R and -P on all platforms.
Worryingly CI is not affected by this, probably a result of #20131 (closed)