Ensure that the same child token addresses are calculated on both chains

[Stefan-Ethernal]

Description

This PR ensures that the same child token addresses are calculated on both sides of the bridge (root and child predicates). This is accomplished by providing the same child token template addresses to both root and child predicates.

Also, bridge E2E tests now contain explicit checks of child token addresses being the same calculated on both sides of the bridge.

Before this PR, different child token addresses were provided to root and child predicates, resulting in different calculations of child token addresses.

Changes include

• Bugfix (non-breaking change that solves an issue)
• Hotfix (change that solves an urgent issue, and requires immediate attention)
• New feature (non-breaking change that adds functionality)
• Breaking change (change that is not backwards-compatible and/or changes current functionality)

Breaking changes

Child token template addresses from the root chain are persisted in the genesis.json.

Checklist

• I have assigned this PR to myself
• I have added at least 1 reviewer
• I have added the relevant labels
• I have updated the official documentation
• I have added sufficient documentation in code

Testing

• I have tested this code with the official test suite
• I have tested this code manually

[vcastellm]

LGTM