feat: add store migration for v7

[XinyuCRO]

enable CancunTime PragueTime

[codecov]

Codecov Report

❌ Patch coverage is 80.00000% with 4 lines in your changes missing coverage. Please review.
✅ Project coverage is 46.07%. Comparing base (ba198e3) to head (b43095c).
⚠️ Report is 1 commits behind head on develop.

Files with missing lines	Patch %	Lines
x/evm/keeper/migrations.go	0.00%	2 Missing ⚠️
x/evm/module.go	33.33%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop     #689      +/-   ##
===========================================
+ Coverage    46.04%   46.07%   +0.03%     
===========================================
  Files          185      186       +1     
  Lines        18627    18646      +19     
===========================================
+ Hits          8577     8592      +15     
- Misses        9311     9314       +3     
- Partials       739      740       +1     

Files with missing lines	Coverage Δ
x/evm/migrations/v7/migrate.go	100.00% <100.00%> (ø)
x/evm/types/chain_config.go	52.40% <100.00%> (+0.28%)	⬆️
x/evm/keeper/migrations.go	38.46% <0.00%> (-7.00%)	⬇️
x/evm/module.go	50.00% <33.33%> (-1.48%)	⬇️

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[thomas-nguy]

can you add a changelog?