Cross-shard transaction could be fired after minor block observed the root block that creates a new shard

[qizhou]

Currently, the logic requires the next root block observed, which is unnecessary.

[ninjaahhh]

can you elaborate?

[qizhou]

This is a low priority. Currently, to allow sending a cross-shard tx to a new shard, we need the next root block to include the blocks from the new shard. We could optimize so that a cross-shard tx could be fired early.