Fix EXT-8075: close signal connection on destruction to prevent callbacks after LLInspectToast is, well, toast.
Fix EXT-8075: close signal connection on destruction to prevent callbacks after LLInspectToast is, well, toast.

gabeharms/firestorm,gabeharms/firestorm,gabeharms/firestorm,gabeharms/firestorm,gabeharms/firestorm,gabeharms/firestorm,gabeharms/firestorm,gabeharms/firestorm,gabeharms/firestorm