feat: Add reset method to ServiceLocator

[Pijukatel]

Description

• Add reset method to service locator to better support tests and multiple Actor(...) initialization scenarios

Issues

• Related to: #Make Actor consistently reusable without raising ServiceConflictError

Testing

• Added unit test

Checklist

• CI passed

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 92.26%. Comparing base (7663404) to head (54d9a17).
⚠️ Report is 2 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1759      +/-   ##
==========================================
- Coverage   92.31%   92.26%   -0.06%     
==========================================
  Files         156      156              
  Lines       10644    10648       +4     
==========================================
- Hits         9826     9824       -2     
- Misses        818      824       +6     

Flag	Coverage Δ
unit	92.26% <100.00%> (-0.06%)	⬇️

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