many: handle components during an offline remodel

[andrewphelpsj]

This change enables us to remodel in an offline context, while including components.

[codecov]

Codecov Report

Attention: Patch coverage is 85.98131% with 15 lines in your changes missing coverage. Please review.

Please upload report for BASE (master@4be46eb). Learn more about missing BASE report.
Report is 65 commits behind head on master.

Files with missing lines	Patch %	Lines
daemon/api_model.go	76.92%	6 Missing and 3 partials ⚠️
overlord/devicestate/devicestate.go	91.04%	4 Missing and 2 partials ⚠️

Additional details and impacted files

@@            Coverage Diff            @@
##             master   #15009   +/-   ##
=========================================
  Coverage          ?   78.23%           
=========================================
  Files             ?     1163           
  Lines             ?   154417           
  Branches          ?        0           
=========================================
  Hits              ?   120810           
  Misses            ?    26168           
  Partials          ?     7439           

Flag	Coverage Δ
unittests	78.23% <85.98%> (?)

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[github-actions]

Tue Feb 4 17:55:20 UTC 2025
The following results are from: https://github.com/canonical/snapd/actions/runs/13137815543

Failures:

Executing:

• google:ubuntu-20.04-64:tests/main/lxd:snapd_cgroup_neither