Show Manage Automations disabled button with tooltip on Policies page

[nulmete]

Related issue: Resolves #39304 (part of #25080)

Implemented similar approach to #39302, with the difference that the list policies endpoint does not include a count, and there is a separate endpoint. I extended the count policies endpoint to include an inherited_policy_count.

Checklist for submitter

• Changes file added for user-visible changes in changes/, orbit/changes/ or ee/fleetd-chrome/changes.
  See Changes files for more information.

Testing

• Added/updated automated tests

• QA'd all new/changed functionality manually

[nulmete]

No need to pass availablePolicies down to this component since it already relies on PoliciesPaginatedList to fetch the policies and paginate them within the modal.

[codecov]

Codecov Report

❌ Patch coverage is 28.12500% with 23 lines in your changes missing coverage. Please review.
✅ Project coverage is 66.21%. Comparing base (e62f451) to head (b357b10).
⚠️ Report is 4 commits behind head on main.

Files with missing lines	Patch %	Lines
...onents/OtherWorkflowsModal/OtherWorkflowsModal.tsx	0.00%	11 Missing ⚠️
server/service/team_policies.go	56.25%	4 Missing and 3 partials ⚠️
...policies/ManagePoliciesPage/ManagePoliciesPage.tsx	0.00%	5 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main   #39392   +/-   ##
=======================================
  Coverage   66.21%   66.21%           
=======================================
  Files        2432     2432           
  Lines      194792   194836   +44     
  Branches     8558     8557    -1     
=======================================
+ Hits       128972   129008   +36     
  Misses      54120    54120           
- Partials    11700    11708    +8     

Flag	Coverage Δ
backend	67.98% <56.25%> (-0.01%)	⬇️
frontend	54.26% <0.00%> (+0.03%)	⬆️

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The base branch was changed.