Deserialize records "just in time" in order to avoid import order isssue

[peterallenwebb]

resolves CORE-308

Description

Because not all Record types may not be imported when a recording is loaded, defer deserialization until they are requested, at which time they are guaranteed to be available.

Checklist

• I have read the contributing guide and understand what's expected of me
• I have signed the CLA
• I have run this code in development and it appears to resolve the stated issue
• I have opened an issue to add/update docs, or docs changes are not required/relevant for this PR
• I have run changie new to create a changelog entry

[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.

[emmyoop]

Looks good. I think the failing tests are unrelated and a fix is in progress separate from this.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 64.30%. Comparing base (dbb2308) to head (9fe6746).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #151   +/-   ##
=======================================
  Coverage   64.30%   64.30%           
=======================================
  Files          51       51           
  Lines        3202     3202           
=======================================
  Hits         2059     2059           
  Misses       1143     1143           

Flag	Coverage Δ
unit	64.30% <0.00%> (ø)

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