Return consistent type in benchpark analyze

[michaelmckinsey1]

Description

• Fix bug where type was inconsistent because python
• Fix bug when using grouping and querying together, making unexpected result

[codecov-commenter]

Codecov Report

❌ Patch coverage is 0% with 8 lines in your changes missing coverage. Please review.
✅ Project coverage is 63.20%. Comparing base (0c72d00) to head (f81be33).
⚠️ Report is 2 commits behind head on develop.

Files with missing lines	Patch %	Lines
lib/benchpark/cmd/analyze.py	0.00%	8 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff            @@
##           develop    #1180   +/-   ##
========================================
  Coverage    63.20%   63.20%           
========================================
  Files           45       45           
  Lines         3427     3427           
  Branches       264      264           
========================================
  Hits          2166     2166           
  Misses        1252     1252           
  Partials         9        9           

Files with missing lines	Coverage Δ
lib/benchpark/cmd/analyze.py	3.71% <0.00%> (ø)

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.