Correct the textdomain block.json value

[goodguyry]

Description

I would like newly-created blocks to have the correct textdomain block.json value, rather than defaulting to the slug.

It appears as though wp-create-block will accept textdomain as an option, though the code is a bit difficult to follow.

I could see this either being a prompt or read from an env file.

Use Case

Currently, because wp-create-block defaults to the block's slug for the text domain, all new blocks have to immediately be modified to correct the block.json textdomain field. This is a step that even the most experienced developer is prone miss.