FEDX-1655: Added missing kinds

[matthewnitschke-wk]

FEDX-1655

Now that sourcegraph/scip#277 merged, we can leverage the new kind fields to record missing Extension and Mixing types

QA

• Verify that extensions and mixins contain the expected kind ids (via scip print)

[aviary2-wf]

Security Insights

No security relevant content was detected by automated scans.

Action Items

• Review PR for security impact; comment "security review required" if needed or unsure
• Verify aviary.yaml coverage of security relevant code

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[alanknight-wk]

@Workiva/release-management-p

[rmconsole-wf]

+1 from RM