ls_real default to detail=true seems overdone #117
Description
ls and ls_real default into detail=true. This is because httpFsspec does so, so this may be unfixable because it's getting the "detail=true" from http's ls. However, it seems silly for an isdir call (which is really all about whether a specific object is a dir or an object) to go through the listing response and then all the objects in the response.
Either figure out a way to pass "detail=false" or create your own isdir information.
This should hopefully speed things up if we aren't making these unnecessary PROPFIND calls.