fix: only pass TSC deadline feature if the host supports it

[pb8o]

Changes

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Reason

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License Acceptance

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PR Checklist

• [ ] If a specific issue led to this PR, this PR closes the issue.
• [ ] 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.
• [ ] All added/changed functionality is tested.
• [ ] New TODOs link to an issue.
• [ ] Commits meet contribution quality standards.

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

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 82.08%. Comparing base (6d6caf4) to head (4079fdb).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #4655   +/-   ##
=======================================
  Coverage   82.08%   82.08%           
=======================================
  Files         255      255           
  Lines       31257    31264    +7     
=======================================
+ Hits        25656    25663    +7     
  Misses       5601     5601           

Flag	Coverage Δ
4.14-c5n.metal	79.57% <100.00%> (+<0.01%)	:arrow_up:
4.14-m5n.metal	79.56% <100.00%> (+<0.01%)	:arrow_up:
4.14-m6a.metal	78.75% <100.00%> (-0.04%)	:arrow_down:
4.14-m6g.metal	76.60% <ø> (ø)
4.14-m6i.metal	79.55% <100.00%> (-0.01%)	:arrow_down:
4.14-m7g.metal	76.60% <ø> (ø)
5.10-c5n.metal	82.09% <100.00%> (+<0.01%)	:arrow_up:
5.10-m5n.metal	82.08% <100.00%> (+<0.01%)	:arrow_up:
5.10-m6a.metal	81.36% <100.00%> (-0.03%)	:arrow_down:
5.10-m6g.metal	79.37% <ø> (-0.01%)	:arrow_down:
5.10-m6i.metal	82.07% <100.00%> (-0.01%)	:arrow_down:
5.10-m7g.metal	79.37% <ø> (ø)
6.1-c5n.metal	82.09% <100.00%> (+<0.01%)	:arrow_up:
6.1-m5n.metal	82.07% <100.00%> (-0.01%)	:arrow_down:
6.1-m6a.metal	81.35% <100.00%> (-0.04%)	:arrow_down:
6.1-m6g.metal	79.36% <ø> (-0.01%)	:arrow_down:
6.1-m6i.metal	82.07% <100.00%> (+<0.01%)	:arrow_up:
6.1-m7g.metal	79.37% <ø> (ø)

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[pb8o]

Superseded by #4666