fq:fix wasm simulate oom

[scf0220]

• Targeted PR against correct branch (see CONTRIBUTING.md)

• [ ] Linked to github-issue with discussion and accepted design OR link to spec that describes this work.

• [ ] Wrote tests

• [ ] Updated relevant documentation (docs/)

• [ ] Added a relevant changelog entry to the Unreleased section in CHANGELOG.md

• [ ] Reviewed Files changed in the github PR explorer

---

For Admin Use:

• Added appropriate labels to PR (ex. wip, ready-for-review, docs)
• Reviewers Assigned
• Squashed all commits, uses message "Merge PR #XYZ: [title]" (coding standards)

[codecov-commenter]

Codecov Report

Merging #3160 (2461061) into dev (2420a8b) will increase coverage by 0.00%. The diff coverage is 12.19%.

:exclamation: Current head 2461061 differs from pull request most recent head 2364b8e. Consider uploading reports for the commit 2364b8e to get more accurate results

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@@           Coverage Diff           @@
##              dev    #3160   +/-   ##
=======================================
  Coverage   36.58%   36.59%           
=======================================
  Files         442      442           
  Lines       46428    46436    +8     
=======================================
+ Hits        16988    16993    +5     
- Misses      28179    28184    +5     
+ Partials     1261     1259    -2     

Impacted Files	Coverage Δ
app/rpc/backend/backend.go	0.00% <0.00%> (ø)
x/wasm/simulate.go	0.00% <0.00%> (ø)
x/wasm/keeper/querier.go	70.69% <50.00%> (+0.65%)	:arrow_up:
x/wasm/keeper/keeper.go	80.00% <57.14%> (+0.14%)	:arrow_up: