71038a151e rpc: Fix documentation assertion for `getrawtransaction` (laanwj)
Pull request description:
When `getrawtransaction` is successfully used on a coinbase transaction, there is an assertion error. This is very unlikely but happens in the `interface_usdt_utxocache.py` test in #24358.
This does the following:
- Add missing "coinbase" documentation.
- Synchronize documentation between `getrawtransaction` and `decoderawtransaction`, the two users of `TxToUniv` that have detailed documentation. `decodepsbt` and `getblock` also uses it but fortunately elides this block.
- Change "vout[].amount" to `STR_AMOUNT` for consistency.
- Add maintainer comment to keep the two places synchronized. It might be possible to get smarter with deduplication, but there are some extra fields that prevent the obvious way.
ACKs for top commit:
jonatack:
ACK 71038a151e
Tree-SHA512: 962236130455d805190ff9a5c971e4e25c17db35614a90ce340264ec953b0ad7fb814eb33ae430b5073955a8a350f72bdd67ba93e35f9c70e5175b836a767a35
1a54c060b3