[clang-tools-extra] [clang-tidy] Add `std::span` to default `bugprone-dangling-handle.HandleClasses` (PR #107711)

[Julian Schmidt via cfe-commits]

https://github.com/5chmidti commented:

Please modify the check's documentation of the `HandleClasses` option to include `std::span` (https://github.com/llvm/llvm-project/blob/main/clang-tools-extra/docs/clang-tidy/checks/bugprone/dangling-handle.rst).

https://github.com/llvm/llvm-project/pull/107711