[lldb][test] Move std::initializer_list from libcxx to generic directory#147702

Michael137 merged 3 commits intollvm:mainllvm/llvm-project:mainfrom

Michael137:lldb/consolidate-stl-tests-initializerlistMichael137/llvm-project:lldb/consolidate-stl-tests-initializerlistCopy head branch name to clipboard