chore(nano): migration to prevent use of incompatible storage

[jansegre]

Motivation

Some recent changes to the nanocontracts storage make it incompatible with an existing storage (like #1378 and #1312).

Acceptance Criteria

• Add an "impossible" migration to prevent use of an incompatible storage and force using a recent snapshot or a sync from scratch

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	chore/nano-storage-compat-migration
Testbed	ubuntu-22.04

Click to view all benchmark results

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	1.84 m (+9.10%) Baseline: 1.68 m	1.52 m (82.49%)	2.02 m (90.91%)

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[codecov]

Codecov Report

❌ Patch coverage is 90.90909% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 85.84%. Comparing base (eb235f2) to head (9bf9151).
⚠️ Report is 3 commits behind head on master.

Files with missing lines	Patch %	Lines
...ansaction/storage/migrations/nc_storage_compat1.py	90.90%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1380      +/-   ##
==========================================
- Coverage   85.86%   85.84%   -0.02%     
==========================================
  Files         431      432       +1     
  Lines       32733    32744      +11     
  Branches     5102     5102              
==========================================
+ Hits        28105    28109       +4     
- Misses       3608     3610       +2     
- Partials     1020     1025       +5     

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