MMT-4058b: Fixing checkbox error

[mandyparson]

Overview

What is the feature?

In previous ticket, set checked = false instead of null. When this is done, the checkbox will always render as unchecked (because false is explicitly set) unless we provide a way to change its state. Thus, 'null' is actually correct. Left a comment so this wouldn't happen again.

What is the Solution?

Summarize what you changed.

What areas of the application does this impact?

List impacted areas.

Testing

Reproduction steps

• Environment for testing:
• Collection to test with:

1. Step 1
2. Step 2...

Attachments

Please include relevant screenshots or files that would be helpful in reviewing and verifying this change.

Checklist

• I have added automated tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 98.11%. Comparing base (954aa78) to head (c1a0cb7).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1415      +/-   ##
==========================================
+ Coverage   98.08%   98.11%   +0.02%     
==========================================
  Files         421      421              
  Lines        6779     6779              
  Branches     1429     1430       +1     
==========================================
+ Hits         6649     6651       +2     
+ Misses        129      127       -2     
  Partials        1        1              

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