[OVERSIGHT] Placement matches still counted in Ranked PvP with leavers

[Master Ketsu.4569]

In matches with leavers, normally there is no elo loss.

But in a placement match, it still counts a leaver match against players, which makes absolutely zero sense due to how elo gets calculated.

This is more or less an oversight-bug that should be fixed for S8. Having broken matches count for placement defeats the purpose of placement. With this kind of nonsense it's actually possible for a top 10 player to get placed in bronze if he gets 10 AFKer games in a row. Pretty ridiculous.