[stateless_validation] Missing main transition state proof for old block pytest repro

[staffik]

A pytest not_validating.py reproduces the error: #10964.

Instructions to run the test

cargo build -p neard --features test_features,statelessnet_protocol
python3 pytest/tests/adversarial/not_validating.py

[codecov]

Codecov Report

Attention: Patch coverage is 28.57143% with 10 lines in your changes are missing coverage. Please review.

Project coverage is 71.10%. Comparing base (09b8b40) to head (7733214).
Report is 12 commits behind head on master.

Files	Patch %	Lines
chain/jsonrpc/src/lib.rs	0.00%	5 Missing and 1 partial ⚠️
chain/client/src/client_actions.rs	0.00%	4 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master   #11188      +/-   ##
==========================================
+ Coverage   70.23%   71.10%   +0.86%     
==========================================
  Files         774      783       +9     
  Lines      154277   155401    +1124     
  Branches   154277   155401    +1124     
==========================================
+ Hits       108363   110504    +2141     
+ Misses      41566    40454    -1112     
- Partials     4348     4443      +95     

Flag	Coverage Δ
backward-compatibility	0.24% <0.00%> (+<0.01%)	⬆️
db-migration	0.24% <0.00%> (+<0.01%)	⬆️
genesis-check	1.41% <0.00%> (-0.01%)	⬇️
integration-tests	37.02% <28.57%> (+1.27%)	⬆️
linux	69.21% <50.00%> (+0.61%)	⬆️
linux-nightly	70.55% <28.57%> (+0.87%)	⬆️
macos	53.01% <50.00%> (-0.23%)	⬇️
pytests	1.63% <0.00%> (-0.02%)	⬇️
sanity-checks	1.42% <0.00%> (-0.01%)	⬇️
unittests	65.71% <14.28%> (-0.20%)	⬇️
upgradability	0.29% <0.00%> (+<0.01%)	⬆️

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