Add a public batch builder wallet to genesis

[Mirko-von-Leipzig]

Adds the batch builder's wallet account to genesis. This is the account that the pass through collector account will target its output p2id note to.

So the fee note flow is:

1. Transaction emits it.
2. Batch builder appends a tx which sends all fee notes to the collection account.
3. Collection account aggregates them all into a single p2id note targeting this wallet account as part of the same tx in (2).

Part of #2501.

Changelog

[[entry]]
scope       = "validator"
impact      = "added"
description = "Add batch builder's wallet account to genesis."