steamcompmgr: Do not try to match a dropdown window's PID with the focused window's PID

Some apps, like WebView2 (used in some game launchers) spawn child processes
to render dropdowns, so the PIDs would not match, and the dropdown would not
be shown. This was the case for e.g. Final Fantasy XIV online.

Author: oSoMoN

src/steamcompmgr.cpp

@@ -3449,10 +3449,6 @@ static bool is_good_override_candidate( steamcompmgr_win_t *override, steamcompm
 	if ( !focus )
 		return false;
 
-	// The pids should probably match for a dropdown to be a good candidate for this window.
-	if (override->pid != focus->pid)
-		return false;
-
 	auto rect = override->GetGeometry();
 	return override != focus && (rect.nX + rect.nWidth) > 0 && (rect.nY + rect.nHeight) > 0;
 }