Add a state request to get the block hash, height, and transaction index from the transaction ID

[teor2345]

Motivation

I don't think we need to store the block height or hash in the scanner storage. Using the transaction hash, we can get the block height and hash from the state, so there's no need to store it in the scanner as well.

Suggested Design

Here's how we could do that state request:

We can use the transaction hash to look up tx_loc_by_hash, which gives us a TransactionLocation containing the block height (and transaction index). And we can get the block hash from the height. We have read::find methods for some of this already.

There are similar methods in the non-finalized state. This method should be for any chain, but prefer the best chain.

https://github.com/ZcashFoundation/zebra/blob/main/book/src/dev/state-db-upgrades.md#current-state-database-format

https://github.com/ZcashFoundation/zebra/blob/main/zebra-state/src/service/read/find.rs#L129

Originally posted by @teor2345 in #7942 (comment)

[oxarbitrage]

I think this is optional initially but feel free to remove the label.

[mpguerra]

We won't be doing any more work on the scanner