SNOW-916949: Fix Okta retry for SSO/SAML endpoints

[sfc-gh-ext-simba-lf]

Description

Fix Okta retry for SSO/SAML endpoints

Checklist

• Code compiles correctly
• Code is formatted according to Coding Conventions
• Created tests which fail without the change (if possible)
• All tests passing (dotnet test)
• Extended the README / documentation, if necessary
• Provide JIRA issue id (if possible) or GitHub issue id in PR name

[codecov]

Codecov Report

Attention: 14 lines in your changes are missing coverage. Please review.

Comparison is base (9da3d62) 84.11% compared to head (0088e61) 84.45%.

Files	Patch %	Lines
...flake.Data/Core/Authenticator/OktaAuthenticator.cs	90.10%	4 Missing and 5 partials ⚠️
Snowflake.Data/Core/HttpUtil.cs	54.54%	4 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #865      +/-   ##
==========================================
+ Coverage   84.11%   84.45%   +0.33%     
==========================================
  Files          92       92              
  Lines        9498     9576      +78     
  Branches      879      891      +12     
==========================================
+ Hits         7989     8087      +98     
+ Misses       1283     1260      -23     
- Partials      226      229       +3     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[sfc-gh-pbulawa]

LGTM