[clang-tidy] modernize-use-std-print,format: Fix checks with Abseil functions (#142312) These checks previously failed with absl::StrFormat and absl::PrintF etc. with: Unable to use 'std::format' instead of 'StrFormat' because first argument is not a narrow string literal [modernize-use-std-format] because FormatStringConverter was rejecting the format string if it had already converted into a different type. Fix the tests so that they check this case properly by accepting string_view rather than const char * and fix the check so that these tests pass. Update the existing tests that checked for the error message that can no longer happen. Fixes: https://github.com/llvm/llvm-project/issues/129484
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