Simplify AddStrategy method

[martintmk]

Details on the issue fix or feature implementation

Dropping the ResilienceStrategyOptions argument from the AddStrategy method that accepts pre-created strategy. In this case the options are never used so there is no need to pass them.

Confirm the following

• I started this PR by branching from the head of the default branch
• I have targeted the PR to merge into the default branch
• I have included unit tests for the issue/feature
• I have successfully run a local build

[codecov-commenter]

Codecov Report

Merging #1203 (46c30c5) into main (92083bb) will increase coverage by 0.00%.
The diff coverage is 100.00%.

❗ Your organization is not using the GitHub App Integration. As a result you may experience degraded service beginning May 15th. Please install the Github App Integration for your organization. Read more.

@@           Coverage Diff           @@
##             main    #1203   +/-   ##
=======================================
  Coverage   83.18%   83.18%           
=======================================
  Files         273      273           
  Lines        6239     6240    +1     
  Branches     1023     1023           
=======================================
+ Hits         5190     5191    +1     
  Misses        844      844           
  Partials      205      205           

Flag	Coverage Δ
linux	83.18% <100.00%> (+<0.01%)	⬆️
macos	83.18% <100.00%> (+<0.01%)	⬆️
windows	83.18% <100.00%> (+<0.01%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
src/Polly.Core/ResilienceStrategyBuilder.cs	100.00% <100.00%> (ø)