fix(grpc): add sanity check in TraceTx and TraceCall

[thomas-nguy]

Closes: #XXX

Description

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For contributor use:

• 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

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For admin use:

• Added appropriate labels to PR (ex. WIP, R4R, docs, etc)
• Reviewers assigned
• Squashed all commits, uses message "Merge pull request #XYZ: [title]" (coding standards)

[codecov]

Codecov Report

Attention: Patch coverage is 42.85714% with 4 lines in your changes missing coverage. Please review.

Project coverage is 46.13%. Comparing base (823fc68) to head (e15ae6d).
Report is 1 commits behind head on release/v1.4.x-2.

Files with missing lines	Patch %	Lines
x/evm/keeper/grpc_query.go	42.85%	3 Missing and 1 partial ⚠️

Additional details and impacted files

@@                 Coverage Diff                  @@
##           release/v1.4.x-2     #657      +/-   ##
====================================================
- Coverage             46.14%   46.13%   -0.02%     
====================================================
  Files                   181      181              
  Lines                 18216    18222       +6     
====================================================
  Hits                   8406     8406              
- Misses                 9085     9090       +5     
- Partials                725      726       +1     

Files with missing lines	Coverage Δ
x/evm/keeper/grpc_query.go	76.56% <42.85%> (-0.84%)	⬇️

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