Bring in v0.46.10 changes.

[SpicyLemon]

Description

This PR applies the v0.46.10 changes to our fork.

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Author Checklist

All items are required. Please add a note to the item if the item is not applicable and
please add links to any relevant follow up issues.

I have...

• included the correct type prefix in the PR title
• added ! to the type prefix if API or client breaking change
• targeted the correct branch (see PR Targeting)
• provided a link to the relevant issue or specification
• followed the guidelines for building modules
• included the necessary unit and integration tests
• added a changelog entry to CHANGELOG.md
• included comments for documenting Go code
• updated the relevant documentation or specification
• reviewed "Files changed" and left comments if necessary
• confirmed all CI checks have passed

Reviewers Checklist

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your handle next to the items reviewed if you only reviewed selected items.

I have...

• confirmed the correct type prefix in the PR title
• confirmed ! in the type prefix if API or client breaking change
• confirmed all author checklist items have been addressed
• reviewed state machine logic
• reviewed API design and naming
• reviewed documentation is accurate
• reviewed tests and test coverage
• manually tested (if applicable)

[SpicyLemon]

This PR is dependent on #505. Once that one is merged, I'll drop this one into ready for review and the diff will get much simpler.

[SpicyLemon]

The following make targets complete without problems: test, test-sim-nondeterminism, test-sim-import-export, test-sim-after-import, and test-sim-multi-seed-short.