develop: download sometimes attempts mounting multiple times

[Python1320]

It could be someone is using the cache bypass or something else

https://github.com/CapsAdmin/pac3/blob/d410cd17ce86c17075dc58881e702d21a91086aa/lua/pac3/core/shared/util.lua#L146

Potentially helpful stacktrace

  1. old - lua/pac3/core/shared/util.lua:688
   2. func - lua/pac3/libraries/resource.lua:254
    3. stop - lua/pac3/libraries/resource.lua:60
     4. callback - lua/pac3/libraries/resource.lua:297
      5. cb - lua/pac3/libraries/resource.lua:193
       6. unknown - lua/pac3/core/shared/http.lua:31

If I manage to catch this again I will add repro

[Python1320]