tests: Add test_git_stash_workspace_reinstate_index

[daavoo]

Forgot to include the test in #182

[codecov-commenter]

Codecov Report

Base: 80.74% // Head: 82.22% // Increases project coverage by +1.47% 🎉

Coverage data is based on head (7aa0497) compared to base (0309191).
Patch coverage: 100.00% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #184      +/-   ##
==========================================
+ Coverage   80.74%   82.22%   +1.47%     
==========================================
  Files          25       25              
  Lines        3470     3483      +13     
  Branches      602      603       +1     
==========================================
+ Hits         2802     2864      +62     
+ Misses        578      529      -49     
  Partials       90       90              

Impacted Files	Coverage Δ
tests/test_stash.py	100.00% <100.00%> (ø)
src/scmrepo/git/backend/dulwich/__init__.py	81.30% <0.00%> (+0.93%)	⬆️
tests/test_git.py	100.00% <0.00%> (+2.93%)	⬆️
src/scmrepo/git/backend/dulwich/asyncssh_vendor.py	83.33% <0.00%> (+5.12%)	⬆️
tests/conftest.py	95.00% <0.00%> (+22.00%)	⬆️

Help us with your feedback. Take ten seconds to tell us how you rate us. Have a feature suggestion? Share it here.

☔ View full report at Codecov.
📢 Do you have feedback about the report comment? Let us know in this issue.