.NET 11 preparation

[martincostello]

• Update F# and VB examples from .NET 9 to .NET 10.
• Suppress new code analysis warnings.
• Use primary constructor.

[Copilot]

Pull request overview

Prepares the repository for newer .NET SDK/analyzer behavior by updating sample target frameworks, adjusting analyzer suppressions, and adopting a C# primary-constructor pattern in benchmarks.

Changes:

• Bump F# and VB sample projects from net9.0 to net10.0.
• Suppress new analyzer warnings (project-level CA1510; CA1010/CA1710 around Context dictionary implementation).
• Refactor benchmark cache provider to use a primary constructor.

Reviewed changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
test/Polly.Specs/Helpers/Caching/StubSerialized.cs	Doc comment punctuation tweak in test helper.
src/Polly/Polly.csproj	Adds CA1510 to global NoWarn list.
src/Polly/Context.Dictionary.cs	Adds targeted pragma suppression for CA1010/CA1710 on Context dictionary partial.
samples/Intro.VisualBasic/Intro.VisualBasic.vbproj	Updates sample TFM to net10.0.
samples/Intro.FSharp/Intro.FSharp.fsproj	Updates sample TFM to net10.0.
bench/Polly.Benchmarks/Cache.cs	Uses a primary constructor for the benchmark cache provider.

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 96.15%. Comparing base (49967c3) to head (79ebe4a).
⚠️ Report is 1 commits behind head on main.
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2932   +/-   ##
=======================================
  Coverage   96.15%   96.15%           
=======================================
  Files         309      309           
  Lines        7128     7128           
  Branches     1005     1005           
=======================================
  Hits         6854     6854           
  Misses        221      221           
  Partials       53       53           

Flag	Coverage Δ
linux	96.15% <ø> (ø)
macos	96.15% <ø> (ø)
windows	96.14% <ø> (ø)

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