Using `std::for_each` with a lambda to push_back inefficient

[christophfroehlich]

Using std::for_each with a lambda to push_back is less efficient than directly constructing the vector. Consider replacing with cpus.assign(cpu_affinity_param_array.begin(), cpu_affinity_param_array.end()); or using the range constructor.

          cpus.assign(cpu_affinity_param_array.begin(), cpu_affinity_param_array.end());

Originally posted by @Copilot in #2823 (comment)

[saumanraaj]

Hey @christophfroehlich I would like to work on this issue