[bug] transitive dependencies missing in cmake_find_package_multi if direct dependency recipe based on conan v2 and no components

[SpaceIm]

Environment Details (include every applicable attribute)

• Operating System+version: macOS Montery
• Compiler+version: AppleClang 13
• Conan version: 1.51.0
• Python version: 3.9.13

Steps to reproduce (Include if Applicable)

• Create a conan v2 recipe foo with:
  • CMakeToolchain, CMakeDeps, cmake_layout
  • at least one dependency bar
  • No components in package_info() (just one lib basically), and no explicit self.cpp_info.requires
• In this recipe, create a test_package based on cmake_find_package_multi
• call conan create . foo/version

You should see that config file of foo lacks bar injection.
If you use CMakeDeps in test_package instead of cmake_find_package_multi, you can see bar in foo config file.
If self.cpp_info.requires in foo recipe is explicitly populated with bar::bar, then foo config file generated by cmake_find_package_multi is fine.

see conan-io/conan-center-index#12063 (comment) or conan-io/conan-center-index#12030 (comment)

Logs (Executed commands with output) (Include/Attach if Applicable)

[franramirez688]

Hi @SpaceIm

Thanks for the issue! This one would be already solved by #11790.
Now, the bar dependency appears as expected:

# Library dependencies
include(CMakeFindDependencyMacro)

if(NOT bar_FOUND)
    if(${CMAKE_VERSION} VERSION_LESS "3.9.0")
        find_package(bar REQUIRED NO_MODULE)
    else()
        find_dependency(bar REQUIRED NO_MODULE)
    endif()
else()
    message(STATUS "Dependency bar already found")
endif()

This fix will be soon in 1.51.1.