Add check for hash capacity > 0 for MAX_CACHE

Achievement would trigger as soon as you entered the node as the
capacity was 0.

It looks like this fix was lost in a merge resolution (see PR #2459)

src/Achievements/Achievements.ts

@@ -553,7 +553,9 @@ export const achievements: IMap<Achievement> = {
     ...achievementData["MAX_CACHE"],
     Icon: "HASHNETCAP",
     Visible: () => hasAccessToSF(Player, 9),
-    Condition: () => hasHacknetServers(Player) && Player.hashManager.hashes === Player.hashManager.capacity,
+    Condition: () => hasHacknetServers(Player) &&
+      Player.hashManager.hashes === Player.hashManager.capacity &&
+      Player.hashManager.capacity > 0,
   },
   SLEEVE_8: {
     ...achievementData["SLEEVE_8"],