[Tidy first] move non-circular import to top of manifest.py

[MichelleArk]

resolves #N/A

Problem

Nested import assuming a cycle

Solution

Move import to top of file since there is no cycle!

Checklist

• I have read the contributing guide and understand what's expected of me
• I have run this code in development and it appears to resolve the stated issue
• This PR includes tests, or tests are not required/relevant for this PR
• This PR has no interface changes (e.g. macros, cli, logs, json artifacts, config files, adapter interface, etc) or this PR has already received feedback and approval from Product or DX
• This PR includes type annotations for new and modified functions

[github-actions]

Thank you for your pull request! We could not find a changelog entry for this change. For details on how to document a change, see the contributing guide.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 88.83%. Comparing base (71a8a41) to head (fa6e0ef).

Additional details and impacted files

@@           Coverage Diff           @@
##             main   #10333   +/-   ##
=======================================
  Coverage   88.83%   88.83%           
=======================================
  Files         180      180           
  Lines       22490    22490           
=======================================
  Hits        19980    19980           
  Misses       2510     2510           

Flag	Coverage Δ
integration	86.21% <100.00%> (+0.02%)	⬆️
unit	62.19% <100.00%> (ø)

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