feat(git-node): suggest abort previous session

[aduh95]

It's a bit pointless to ask the user to type a command when we could run it for them.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 80.58%. Comparing base (5034b4f) to head (5d0fc8d).
⚠️ Report is 11 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1042      +/-   ##
==========================================
- Coverage   80.93%   80.58%   -0.36%     
==========================================
  Files          39       39              
  Lines        4841     4851      +10     
==========================================
- Hits         3918     3909       -9     
- Misses        923      942      +19     

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