Revert unintended skip test in feegrant

[sahith-narahari]

Description

This seems to be an unintended change from #8780. Reverting it

closes: #XXXX

---

Before we can merge this PR, please make sure that all the following items have been
checked off. If any of the checklist items are not applicable, please leave them but
write a little note why.

• 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.
• Code follows the module structure standards.
• Wrote unit and integration tests
• Updated relevant documentation (docs/) or specification (x/<module>/spec/)
• Added relevant godoc comments.
• Added a relevant changelog entry to the Unreleased section in CHANGELOG.md
• Re-reviewed Files changed in the Github PR explorer
• Review Codecov Report in the comment section below once CI passes

[codecov]

Codecov Report

Merging #8789 (5021cd7) into master (da064e1) will increase coverage by 0.02%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master    #8789      +/-   ##
==========================================
+ Coverage   59.34%   59.37%   +0.02%     
==========================================
  Files         563      563              
  Lines       31251    31251              
==========================================
+ Hits        18545    18554       +9     
+ Misses      10551    10543       -8     
+ Partials     2155     2154       -1     

Impacted Files	Coverage Δ
x/crisis/keeper/keeper.go	86.20% <100.00%> (ø)
x/feegrant/simulation/decoder.go	100.00% <0.00%> (+100.00%)	⬆️