🐛 Fix init instance tests and add init of a local instance in cwd

[Koncopd]

Fix laminlabs/lamindb#2180
Also fix incorrect tests in test_init_instance.py

[github-actions]

🚀 Deployed on https://676992800608778df777e57d--lamindb-setup-htry.netlify.app

[codecov]

Codecov Report

Attention: Patch coverage is 75.00000% with 1 line in your changes missing coverage. Please review.

Project coverage is 83.61%. Comparing base (0a1fddc) to head (5b00089).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
lamindb_setup/core/_settings.py	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #917      +/-   ##
==========================================
- Coverage   83.79%   83.61%   -0.19%     
==========================================
  Files          43       43              
  Lines        3432     3429       -3     
==========================================
- Hits         2876     2867       -9     
- Misses        556      562       +6     

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[Koncopd]

Test coverage was higher due to an incorrect test setup, can't really restore it fully with the correct setup.