docs: Update isolated API instance creation to use OpenFeatureFactory

[askpt]

Signed-off-by: André Silva 2493377+askpt@users.noreply.github.com

This PR

This pull request updates the samples/Console/app.cs sample to use the new OpenFeatureFactory.CreateIsolated() method for creating an isolated OpenFeature instance, instead of the older Api.CreateIsolated(). It also adds the necessary OpenFeature.Isolated namespace import.

Migration to new isolated API:

• Replaced Api.CreateIsolated() with OpenFeatureFactory.CreateIsolated() for creating an isolated OpenFeature instance, and added pragma directives to suppress related warnings.

Namespace updates:

• Added using OpenFeature.Isolated; to support the new isolated API.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 93.52%. Comparing base (b3fa7f4) to head (06116d8).

Additional details and impacted files

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##             main     #756   +/-   ##
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  Coverage   93.52%   93.52%           
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  Files          69       69           
  Lines        2981     2981           
  Branches      355      355           
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  Hits         2788     2788           
  Misses        135      135           
  Partials       58       58           

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[gemini-code-assist]

Code Review

This pull request updates the console sample to use OpenFeatureFactory.CreateIsolated() instead of Api.CreateIsolated() and adds the OpenFeature.Isolated namespace. It also introduces pragma suppressions for the experimental API. Feedback suggests simplifying the pragma suppression comments to improve readability in the sample code.