[clang-tools-extra] [clang-tidy] Enable `modernize-return-braced-init-list`'s tests in C++11 (PR #158196)

[Victor Chernyakin via cfe-commits]

localspook wrote:

Added `-std=c++11-or-later`. If we want this to be a general policy, that all checks which require `LangOpts.CPlusPlus11` should specify `-std` explicitly, we'll need to fix a number of tests

https://github.com/llvm/llvm-project/pull/158196