Remove cmake_target_namespace and cmake_module_target_namespace properties in CMakeDeps generator - #10099

I was reviewing this pull request proposing to remove the restriction of having a component with the name of the package, and I have some related questions:
What would happen if a user declares a component with a cmake_target_name and the target name collides with the root one? Or with another component? What about the aliases? Do we have tests? Is it undefined behavior?

I was reviewing this pull request proposing to remove the restriction of having a component with the name of the package, and I have some related questions: What would happen if a user declares a component with a cmake_target_name and the target name collides with the root one? Or with another component? What about the aliases? Do we have tests? Is it undefined behavior?

For the aliases there's a check and a warning that the alias won't be declared if already declared: https://github.com/SSE4/conan/blob/16556f34e1e70e07e6d20188193df16adaed7c59/conan/tools/cmake/cmakedeps/templates/targets.py#L85

For cmake_target_name I think we should probably raise if the target names collide

I would say, Let's raise in both cases. We can always revert if we realize later that something is being re-declared or something like that.