[Feature] Move state root calculation to the background to enhance live sync performance.

[keefel]

Describe the feature

Based on our test results, calculating the state root is time-consuming. On certain blockchains with shorter block times and higher throughput, the performance of live synchronization encounters significant bottlenecks. Inspired by the asynchronous persistence of databases, we can similarly process the state root asynchronously in the background. Furthermore, we can even bypass the validation of state roots for some blocks to enhance overall performance.

Additional context

I have implemented the first version of this, and the test results show a significant performance improvement. You can refer to this pull request for details: PR #12933.