Write npm config file directly to align with other package manager lo…

[FiveSlashNine]

Description of changes:
Updated npm login to write configuration directly to the config file, aligning the behavior with other package manager integrations.

By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of your choice.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 44.49%. Comparing base (70d3b38) to head (23c00b8).
⚠️ Report is 153 commits behind head on develop.

Additional details and impacted files

@@             Coverage Diff              @@
##           develop   #10534       +/-   ##
============================================
- Coverage    93.42%   44.49%   -48.94%     
============================================
  Files          211      301       +90     
  Lines        17312    36704    +19392     
============================================
+ Hits         16174    16330      +156     
- Misses        1138    20374    +19236     

☔ View full report in Codecov by Harness.
📢 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.