Fill all KV event's fields

Currently only BlockHashes is filled in BlockStored kv-event.
Fill all fields:
	BlockHashes     []any    // Changed from []uint64
	ParentBlockHash any      // Changed from *uint64
	TokenIds        []uint32
	BlockSize       int
	LoraID          *int    `msgpack:",omitempty"`
	Medium          *string `msgpack:",omitempty"`
