Superfluid Misc: Improve grpc_query (backport #1084)

[mergify]

This is an automatic backport of pull request #1084 done by Mergify.
Cherry-pick of 052bc20 has failed:

On branch mergify/bp/v7.x/pr-1084
Your branch is up to date with 'origin/v7.x'.

You are currently cherry-picking commit 052bc20.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --skip" to skip this patch)
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Changes to be committed:
	modified:   x/superfluid/keeper/grpc_query.go

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   x/superfluid/keeper/grpc_query_test.go

To fix up this pull request, you can check it out locally. See documentation: https://docs.github.com/en/github/collaborating-with-pull-requests/reviewing-changes-in-pull-requests/checking-out-pull-requests-locally

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[codecov-commenter]

Codecov Report

Merging #1085 (a4bbe0b) into v7.x (86bafe3) will decrease coverage by 0.06%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             v7.x    #1085      +/-   ##
==========================================
- Coverage   20.63%   20.56%   -0.07%     
==========================================
  Files         193      193              
  Lines       25264    25465     +201     
==========================================
+ Hits         5214     5238      +24     
- Misses      19095    19273     +178     
+ Partials      955      954       -1     

Impacted Files	Coverage Δ
x/superfluid/keeper/grpc_query.go	56.28% <100.00%> (+9.73%)	⬆️
x/incentives/types/gauge.pb.go	0.74% <0.00%> (+0.11%)	⬆️

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