trunk/2c47a6e31ecb1ed5aecbb4738fa2d0fcc40089f6: [cpp] use std::clamp (#185490)

«As discussed here #185354 (comment) these are simple replacements of std::min(std::max(...), ..) with std::clamp I found using git grep. there are other occurrences in the codebase, i'll follow up with another PR for tho...»