P4-Better estimate the max word length for passage truncating in prompts

[sahel-sh]

For example:

maybe in a oneline function that could be used both for LRL and rankGPT prompts?

something like: num_words = (context size - num output tokens(current window size) )* 0.75 max_word_length = num_words / (current window size or rank_end - rank_start)