Updated ValidatorState.NON_REGISTERED comment

[naddison36]

Code Change Checklist

To be completed before internal review begins:

• The contract code is complete
• Executable deployment file
• Fork tests that test after the deployment file runs
• Unit tests *if needed
• The owner has done a full checklist review of the code + tests

Internal review:

• Two approvals by internal reviewers

Deploy checklist

Two reviewers complete the following checklist:

- [ ] All deployed contracts are listed in the deploy PR's description
- [ ] Deployed contract's verified code (and all dependencies) match the code in master
- [ ] Contract constructors have correct arguments
- [ ] The transactions that interacted with the newly deployed contract match the deploy script.
- [ ] Governance proposal matches the deploy script
- [ ] Smoke tests pass after fork test execution of the governance proposal

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 51.25%. Comparing base (94a41fb) to head (2fdd937).
⚠️ Report is 2 commits behind head on nicka/vanilla-staking.

Additional details and impacted files

@@                    Coverage Diff                    @@
##           nicka/vanilla-staking    #2916      +/-   ##
=========================================================
+ Coverage                  50.95%   51.25%   +0.29%     
=========================================================
  Files                        110      110              
  Lines                       4914     4917       +3     
  Branches                    1358     1361       +3     
=========================================================
+ Hits                        2504     2520      +16     
+ Misses                      2406     2392      -14     
- Partials                       4        5       +1     

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[sparrowDom]

LGTM