Multichain: Update Controllers to Remove NetworkController getState dependencies

### What is this about?

A number of controllers in `core` repo use `NetworkController:getState` and likewise calls to get the currently selected global chain ID. We need to remove or shim this reliance as there will no longer be a globally selected chain ID.

### Scenario

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### Design

_No response_

### Technical Details

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### Threat Modeling Framework

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### Acceptance Criteria

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### Stakeholder review needed before the work gets merged

- [ ] Engineering (needed in most cases)
- [ ] Design
- [ ] Product
- [ ] QA (automation tests are required to pass before merging PRs but not all changes are covered by automation tests - please review if QA is needed beyond automation tests)
- [ ] Security
- [ ] Legal
- [ ] Marketing
- [ ] Management (please specify)
- [ ] Other (please specify)

### References

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No files or tests are identified. Start by locating controllers in the core repository that call NetworkController:getState or read the currently selected global chain ID, then trace how those dependencies are used. Done means the controllers no longer rely on a globally selected chain ID, using removal or a shim as appropriate.

Written by the indexing model from the issue text.