Expose smtp and sso settings to team admins

[jacobshandling]

For #25320

• Added/updated automated tests
• A detailed QA plan exists on the associated ticket (if it isn't there, work with the product group's QA engineer to add it)
• Manual QA for all new/changed functionality

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 63.54%. Comparing base (f7ec76f) to head (609b1a1).
Report is 13 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main   #25322   +/-   ##
=======================================
  Coverage   63.54%   63.54%           
=======================================
  Files        1618     1618           
  Lines      154433   154469   +36     
  Branches     4037     4037           
=======================================
+ Hits        98130    98163   +33     
- Misses      48564    48566    +2     
- Partials     7739     7740    +1     

Flag	Coverage Δ
backend	64.39% <100.00%> (+<0.01%)	⬆️

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[lucasmrod]

Looks good. Left two comments.