[Tree][NFC] clang-format TTree::AddFriend implementations
[Tree][NFC] clang-format TTree::AddFriend implementations

karies/root,root-mirror/root,root-mirror/root,karies/root,karies/root,karies/root,karies/root,olifre/root,root-mirror/root,root-mirror/root,karies/root,karies/root,olifre/root,root-mirror/root,root-mirror/root,karies/root,root-mirror/root,olifre/root,olifre/root,karies/root,karies/root,olifre/root,olifre/root,olifre/root,root-mirror/root,root-mirror/root,root-mirror/root,olifre/root,olifre/root,olifre/root,karies/root,root-mirror/root,olifre/root