Fix map store

[bladehan1]

Description

Fix marshal fork and test environment fork.

Changes

• 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

Fix the possible node fork of the multichain proposal map encoding, and fix the node fork that has occurred in the test environment.

Checklist

• I have added at least 1 reviewer to this PR
• I have added sufficient documentation in code
• I will be resolving comments - if any - by pushing each fix in a separate commit and linking the commit hash in the comment reply

Cross repository changes

• This PR requires changes to delivery
  • In case link the PR here:

Testing

• [] I have added unit tests
• I have added tests to CI
• I have tested this code manually on local environment
• I have tested this code manually on remote devnet

Manual tests

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Additional comments

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