Cherry-picked from #38658: Fixes errors like
~~~
CMake Error at
/Users/vcpkg/Data/installed/x64-osx/share/ffmpeg/FindFFMPEG.cmake:70
(find_library):
Could not find
FFMPEG_DEPENDENCY_-F/Library/Developer/CommandLineTools/SDKs/MacOSX14.2.sdk/System/Library/Frameworks_RELEASE
using the following names:
-F/Library/Developer/CommandLineTools/SDKs/MacOSX14.2.sdk/System/Library/Frameworks
Call Stack (most recent call first):
/Users/vcpkg/Data/installed/x64-osx/share/ffmpeg/FindFFMPEG.cmake:144
(append_dependencies)
/Users/vcpkg/Data/installed/x64-osx/share/ffmpeg/vcpkg-cmake-wrapper.cmake:25
(_find_package)
/Users/vcpkg/Data/work/1/s/scripts/buildsystems/vcpkg.cmake:813
(include)
CMakeLists.txt:32 (find_package)
~~~
d201e6513b