SNOW-1739483 improve calculation of time to wait before retry

[sfc-gh-dstempniak]

Description

Improve calculation of time to wait before retry

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

All modified and coverable lines are covered by tests ✅

Project coverage is 86.17%. Comparing base (fe8e848) to head (e6ef935).

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1046      +/-   ##
==========================================
+ Coverage   86.11%   86.17%   +0.05%     
==========================================
  Files         120      120              
  Lines       11629    11628       -1     
  Branches     1167     1167              
==========================================
+ Hits        10014    10020       +6     
+ Misses       1332     1328       -4     
+ Partials      283      280       -3     

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