fix(commands/init): add missing uv provider to "cz init"

[Lee-W]

Description

Checklist

• Add test cases to all the changes you introduce
• Run poetry all locally to ensure this change passes linter check and test
• Test the changes on the local machine manually
• Update the documentation for the changes

Expected behavior

Steps to Test This Pull Request

Additional context

[Lee-W]

quick fix during some testing. will try to see whether it makes sense to add a test for it.

[codecov]

Codecov Report

Attention: Patch coverage is 50.00000% with 4 lines in your changes missing coverage. Please review.

Project coverage is 97.55%. Comparing base (120d514) to head (6c97d55).
Report is 578 commits behind head on master.

Files with missing lines	Patch %	Lines
commitizen/commands/init.py	50.00%	4 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1378      +/-   ##
==========================================
+ Coverage   97.33%   97.55%   +0.21%     
==========================================
  Files          42       57      +15     
  Lines        2104     2655     +551     
==========================================
+ Hits         2048     2590     +542     
- Misses         56       65       +9     

Flag	Coverage Δ
unittests	97.55% <50.00%> (+0.21%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

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

[woile]

We could detect if uv is being used by checking the presence of uv.lock, and set it as default.

[Lee-W]

Yep, we should. This PR is somewhat a work in progress (but already fixes something). I'll try to wrap it up today!