Fix migrate legacy params

[alpe]

Resolves #1725

See # 1732

[codecov]

Codecov Report

Merging #1729 (c90a48c) into main (3b6512c) will decrease coverage by 2.37%.
Report is 2 commits behind head on main.
The diff coverage is 29.95%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1729      +/-   ##
==========================================
- Coverage   57.25%   54.89%   -2.37%     
==========================================
  Files          63       64       +1     
  Lines        8818     9640     +822     
==========================================
+ Hits         5049     5292     +243     
- Misses       3287     3822     +535     
- Partials      482      526      +44     

Files	Coverage Δ
app/upgrades.go	85.00% <100.00%> (+6.95%)	⬆️
x/wasm/migrations/v2/store.go	75.00% <100.00%> (+15.00%)	⬆️
x/wasm/types/params.go	74.19% <100.00%> (+1.91%)	⬆️
app/app.go	85.66% <86.66%> (+1.31%)	⬆️
x/wasm/migrations/v2/params_legacy.go	68.57% <68.57%> (ø)
x/wasm/migrations/v2/legacy_types.go	21.81% <21.81%> (ø)

... and 1 file with indirect coverage changes

[pinosu]

LGTM 👍

[pinosu]

Great work! Nice to see also the example for upgrades from 33 to 50. Very useful 💯
Definitely good to mention it in the CHANGELOG 👍