As you wisely demonstrate, that strategy ultimately defeats the setup for a true short squeeze. The solution is to set no sell limit at all. If no one sells, the shorts are squeezed, squashed and slain. The shorts would have to bid astronomical prices to buy back and return the shares that they have borrowed. All the while their brokers would be hollering at them with margin calls.
The lurking question would be: at what level would otherwise strong longs be enticed to sell? Once they start weakening and sell, the price would start to come down, but likely remain at a rather high level if a significant number of shareholders choose to sit out the process. If Tesla shareholders do remain steadfast during the coming days, things could get quite interesting.