Can someone explain what this actually means?<p><i>The developers added that since there are (almost) no “undo” buttons in the world of crypto, the user’s LINK tokens are now stuck in a non-upgradeable—and thus immutable—GHST staking contract forever.</i><p>What is a GHST staking contract, and why can't the other party in the contract simply refund the tokens in a second transaction?