[WIP] fix(vmm): call KVMCLOCK_CTRL when pausing

[kalyazin]

Changes

Call KVM_KVMCLOCK_CTRL when pausing. Related: https://github.com/firecracker-microvm/firecracker/issues/1859 TODO (if merging): update changelog TODO (if merging): doc update

Reason

This is to avoid guest kernel panic on resume path due to softlockup detection.

License Acceptance

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license. For more information on following Developer Certificate of Origin and signing off your commits, please check CONTRIBUTING.md.

PR Checklist

• [x] If a specific issue led to this PR, this PR closes the issue.
• [x] The description of changes is clear and encompassing.
• [ ] Any required documentation changes (code and docs) are included in this PR.
• ~~[ ] API changes follow the Runbook for Firecracker API changes.~~
• [ ] User-facing changes are mentioned in CHANGELOG.md.
• [x] All added/changed functionality is tested.
• ~~[ ] New TODOs link to an issue.~~
• [x] Commits meet contribution quality standards.

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• [x] This functionality cannot be added in rust-vmm.