docs: Add docs for silent authentication

[tusharpandey13]

Fixes: #2128
Added docs about silent authentication to highlight recommended methods.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 90.38%. Comparing base (08bf226) to head (dd7764b).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2422   +/-   ##
=======================================
  Coverage   90.38%   90.38%           
=======================================
  Files          39       39           
  Lines        4481     4481           
  Branches      912      912           
=======================================
  Hits         4050     4050           
  Misses        425      425           
  Partials        6        6           

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