XCode: ensure LINK_LIBRARY genex is usable with XCODE_LINK_BUILD_PHASE_MODE
requested to merge marc.chevrier/cmake:XCode-XCODE_LINK_BUILD_PHASE_MODE-and-LINK_LIBRARY-genex into master
Linking libraries with $<LINK_LIBRARY> genex must be handled correctly when XCODE_LINK_BUILD_PHASE_MODE target property is set to BUILT_ONLY or KNOWN_LOCACTION.
when the specified feature is WEAK_FRAMEWORK or WEAK_LIBRARY, the libraries must be listed in the Link Binary With Libraries build phase with the status Optional.
Fixes: #24176 (closed)
Backport: release
Edited by Marc Chevrier