Very long iterative compile times for cargo doc on workspaces with many crates #82845
Description
I'm attempting to update the docs of Bevy, a relatively large Rust crate.
Building the docs using cargo doc initially takes about 90s. Rebuilding the docs using cargo doc without making any changes takes less than a second. Making any change to the doc strings within even a single file (e.g. Entity) seems to cause each subcrate to be redocumented, taking another 90s.
This obviously makes it quite challenging to check how my changes are displayed.
