Add CreateFromJson options overload

[martincostello]

• Add overload to OpenApiAnyFactory.CreateFromJson() that supports passing in a JsonSerializerOptions as a workaround for [Bug]: All enum values show up as "null" when using JSON Source Generation #3217 (see [Bug]: All enum values show up as "null" when using JSON Source Generation #3217 (comment)).
• Use concrete types as suggested by analyzers.
• Move unshipped APIs to shipped.
• Bump version to 7.3.0.

Tested it unblocks #3217 manually.

[Copilot]

Copilot reviewed 1 out of 8 changed files in this pull request and generated 1 comment.

Files not reviewed (7)

• Directory.Build.props: Language not supported
• src/Swashbuckle.AspNetCore.ReDoc/PublicAPI/PublicAPI.Shipped.txt: Language not supported
• src/Swashbuckle.AspNetCore.ReDoc/PublicAPI/PublicAPI.Unshipped.txt: Language not supported
• src/Swashbuckle.AspNetCore.SwaggerGen/PublicAPI/PublicAPI.Shipped.txt: Language not supported
• src/Swashbuckle.AspNetCore.SwaggerGen/PublicAPI/PublicAPI.Unshipped.txt: Language not supported
• src/Swashbuckle.AspNetCore.SwaggerUI/PublicAPI/PublicAPI.Shipped.txt: Language not supported
• src/Swashbuckle.AspNetCore.SwaggerUI/PublicAPI/PublicAPI.Unshipped.txt: Language not supported

Comments suppressed due to low confidence (1)

src/Swashbuckle.AspNetCore.SwaggerGen/SwaggerGenerator/OpenApiAnyFactory.cs:47

• [nitpick] The error message could be more descriptive. Consider providing additional context or guidance on what went wrong.

throw new System.ArgumentException($"Unsupported value kind {jsonElement.ValueKind}");

[codecov-commenter]

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Codecov Report

Attention: Patch coverage is 60.00000% with 2 lines in your changes missing coverage. Please review.

Project coverage is 83.65%. Comparing base (2fd6b39) to head (4c101bb).
Report is 76 commits behind head on master.

Files with missing lines	Patch %	Lines
...e.SwaggerGen/SwaggerGenerator/OpenApiAnyFactory.cs	60.00%	2 Missing ⚠️

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Additional details and impacted files

@@           Coverage Diff           @@
##           master    #3218   +/-   ##
=======================================
  Coverage   83.65%   83.65%           
=======================================
  Files          76       76           
  Lines        3175     3176    +1     
  Branches      536      536           
=======================================
+ Hits         2656     2657    +1     
  Misses        519      519           

Flag	Coverage Δ
Linux	83.65% <60.00%> (+<0.01%)	⬆️
Windows	83.65% <60.00%> (+<0.01%)	⬆️
macOS	83.65% <60.00%> (+<0.01%)	⬆️

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