Include partial download times in Time to complete request graphs
Once we have partial completion times in the
onionperf database (#30610 (moved)), we can include more measurements in the 50 KiB and 1 MiB graphs by simply switching from
PARTIAL[51200|1048576]. And maybe we should just use
PARTIAL5242880 in the 5 MiB graph, too, for consistency, even though the resulting graph should be the same or at least very similar.
As part of this change we might have to update the text to say that we're plotting the same 1 MiB/5 MiB request in two/three graphs, which reduces diversity to some extent.
In any case we must update the reproducible metrics page on this aspect.
Note that this ticket is not a child of #29507 (moved) even though it depends on other children of that ticket.