fix(nano): state API regression when requesting dict fields

[jansegre]

Motivation

The regression was caused by #1500 and basically causes an error at the whole request instead of just on the offending field.

Acceptance Criteria

• Handle the TypeError instead of letting it fail the whole request
• Add tests that cover the regression and the other fields that weren't affected, those should be dealt with in the future

Checklist

• If you are requesting a merge into master, confirm this code is production-ready and can be included in future releases as soon as it gets merged

[github-actions]

Bencher Report

Branch	fix/nano/state-api-container-field-error
Testbed	ubuntu-22.04

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Benchmark	Latency	Benchmark Result minutes (m) (Result Δ%)	Lower Boundary minutes (m) (Limit %)	Upper Boundary minutes (m) (Limit %)
sync-v2 (up to 20000 blocks)	📈 view plot 🚷 view threshold	1.69 m (-2.60%) Baseline: 1.73 m	1.56 m (92.40%)	2.08 m (81.17%)

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 86.21%. Comparing base (dd1e404) to head (b590028).

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1507      +/-   ##
==========================================
- Coverage   86.27%   86.21%   -0.06%     
==========================================
  Files         440      440              
  Lines       34055    34058       +3     
  Branches     5326     5327       +1     
==========================================
- Hits        29381    29364      -17     
- Misses       3657     3670      +13     
- Partials     1017     1024       +7     

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