Fix #126798: launcher manifest not linked leading to startup issues

The manifest was not linked, leading blender-launcher not to look in
the blender.crt folder for the vcruntime140.dll. Causing issues for
systems where this binary was not available elsewhere (like pristine
windows installs)

source/creator/CMakeLists.txt

@@ -348,7 +348,7 @@ else()
       ${CMAKE_SOURCE_DIR}/release/windows/icons/winblender.rc
     )
     if(NOT WITH_WINDOWS_EXTERNAL_MANIFEST)
-      list(APPEND SRC
+      target_sources(blender-launcher PRIVATE
         ${CMAKE_BINARY_DIR}/blender.exe.manifest
       )
     endif()