fix(rpc): patch gas used api for block less than upgrade height

[mmsqe]

Updates: crypto-org-chain/cronos#792

Description

---

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

---

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

Merging #1557 (57d433d) into main (5f7ee9b) will increase coverage by 0.02%.
The diff coverage is 61.36%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1557      +/-   ##
==========================================
+ Coverage   68.33%   68.35%   +0.02%     
==========================================
  Files         110      110              
  Lines       10171    10181      +10     
==========================================
+ Hits         6950     6959       +9     
- Misses       2818     2819       +1     
  Partials      403      403              

Impacted Files	Coverage Δ
server/config/config.go	22.85% <51.42%> (+0.31%)	⬆️
rpc/backend/tx_info.go	64.47% <100.00%> (+0.96%)	⬆️