Add an option to block the content update of a transaction

### Is your feature request related to a problem?

For example in case of NFT, if we host an image in the content of a transaction, we shouldn't change the image.
It's necessary to block this information

### Describe the solution you'd like

add a smart contract in code field
```
condition inherit: [
uco_transfers: true,
token_transfers: true,
authorized_keys: true,
secrets: true
]
```

### Additional context

_No response_

The issue names no files, tests, or entry points. Start by tracing how aeweb-cli represents transaction content and the code field, then clarify the intended inheritance rules for blocking updates. Done should mean the requested option reliably prevents content changes while preserving the listed transfer, key, and secret behavior.

Written by the indexing model from the issue text.