Filter out stale accessibility events.

internal/atspi/adapter_secure_native.go

@@ -43,6 +43,7 @@ func (adapter *Adapter) applySecureReset() {
 	if !adapter.secureReset.Swap(false) {
 		return
 	}
+	C.cthulhu_clear_selection(adapter.callbackData)
 	adapter.deferredLiveRegions = nil
 	adapter.invalidateTree()
 	adapter.treeMutex.Lock()