Fix authorization-config/authentication-config handling

[brandond]

Proposed Changes

• Fix authorization-config/authentication-config handling.
  Need to handle authn/authz config separately. Also, the warning was being printed under the wrong condition.

Types of Changes

Bugfix

Verification

See linked issue

Testing

Yes

Linked Issues

• Cannot configure anonymous auth in --authentication-config file #12245
• Cannot use Anonymous Authenticator Configuration rancher/rke2#8137

User-Facing Change

Further Comments

[codecov]

Codecov Report

Attention: Patch coverage is 63.63636% with 4 lines in your changes missing coverage. Please review.

Project coverage is 19.91%. Comparing base (effe6ce) to head (508e1ff).

Files with missing lines	Patch %	Lines
pkg/server/handlers/secrets-encrypt.go	0.00%	4 Missing ⚠️

❗ There is a different number of reports uploaded between BASE (effe6ce) and HEAD (508e1ff). Click for more details.

HEAD has 1 upload less than BASE

Flag	BASE (effe6ce)	HEAD (508e1ff)
e2etests	1	0

Additional details and impacted files

@@             Coverage Diff             @@
##           master   #12338       +/-   ##
===========================================
- Coverage   41.07%   19.91%   -21.17%     
===========================================
  Files         166      184       +18     
  Lines       19000    19228      +228     
===========================================
- Hits         7804     3829     -3975     
- Misses      10003    14968     +4965     
+ Partials     1193      431      -762     

Flag	Coverage Δ
e2etests	?
unittests	19.91% <63.63%> (-0.17%)	⬇️

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