Improve array generation in array_from_delimited_string

[rsore]

Very small, isolated change. Simply attempts to make the segmentation of string_views in array_from_delimited_string more readable. The lambda passed to std::ranges::transform has been updated, and now looks like:

std::ranges::transform(std::views::split(strv, delimiter),
                       result.begin(),
                       [](const auto &segment) -> std::string_view
                       {
                           const auto length = static_cast<std::size_t>(std::ranges::distance(segment));
                           return {segment.begin(), length};
                       });

[github-actions]

clang-tidy review says "All clean, LGTM! 👍"