[clang-tools-extra] Enforce SL.con.3: Add check to replace operator[] with at() [Cont.] (PR #95220)

[Baranov Victor via cfe-commits]

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+// RUN: %check_clang_tidy -std=c++2b -check-suffix=DEFAULT %s \
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vbvictor wrote:

You can have one test file with multiple RUN-commands with different c++ standarts using defines. Look at `clang-tools-extra/test/clang-tidy/checkers/modernize/make-unique-inaccessible-ctors.cpp` for some inspiration, wrap C++23-ish constructs in `#ifdef CXX_23`


https://github.com/llvm/llvm-project/pull/95220