Added XML docs to the AddServiceDefaults and other extensions methods.

[saibimajdi]

Description

Added XML docs to these extension methods.

• AddServiceDefaults<TBuilder>(this TBuilder builder)
• ConfigureOpenTelemetry<TBuilder>(this TBuilder builder)
• AddOpenTelemetryExporters<TBuilder>(this TBuilder builder)
• AddDefaultHealthChecks<TBuilder>(this TBuilder builder)
• MapDefaultEndpoints(this WebApplication app)

Fixes #4079

Checklist

• Is this feature complete?
  • Yes. Ready to ship.
  • No. Follow-up changes expected.
• Are you including unit tests for the changes and scenario tests if relevant?
  • Yes
  • No
• Did you add public API?
  • Yes
    • If yes, did you have an API Review for it?
      • Yes
      • No
    • Did you add <remarks /> and <code /> elements on your triple slash comments?
      • Yes
      • No
  • No
• Does the change make any security assumptions or guarantees?
  • Yes
    • If yes, have you done a threat model and had a security review?
      • Yes
      • No
  • No
• Does the change require an update in our Aspire docs?
  • Yes
    • Is this introducing a breaking change?
      • Yes
        • Link to aspire-docs issue (please use this breaking-change template):
      • No
        • Link to aspire-docs issue (please use this doc-idea template):
  • No

[Copilot]

Pull Request Overview

This PR adds XML documentation comments to the ServiceDefaults extension methods across multiple projects for improved developer guidance. The changes include adding summaries and parameter descriptions to:

• AddServiceDefaults
• ConfigureOpenTelemetry
• AddOpenTelemetryExporters (private)
• AddDefaultHealthChecks
• MapDefaultEndpoints

Reviewed Changes

Copilot reviewed 10 out of 10 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
playground/seq/Seq.ServiceDefaults/Extensions.cs	Added XML docs to all extension methods.
playground/Playground.ServiceDefaults/Extensions.cs	Added XML docs to all extension methods.
src/Aspire.ProjectTemplates/templates/aspire-starter/9.2/Aspire-StarterApplication.1.ServiceDefaults/Extensions.cs	Added XML docs to all extension methods.
src/Aspire.ProjectTemplates/templates/aspire-empty/9.1/AspireApplication.1.ServiceDefaults/Extensions.cs	Added XML docs to all extension methods.
playground/TestShop/TestShop.ServiceDefaults/Extensions.cs	Added XML docs to all extension methods.
tests/TestingAppHost1/TestingAppHost1.ServiceDefaults/Extensions.cs	Added XML docs to all extension methods.
src/Aspire.ProjectTemplates/templates/aspire-empty/9.2/AspireApplication.1.ServiceDefaults/Extensions.cs	Added XML docs to all extension methods.
src/Aspire.ProjectTemplates/templates/aspire-servicedefaults/9.1/Extensions.cs	Added XML docs to all extension methods.
src/Aspire.ProjectTemplates/templates/aspire-servicedefaults/9.2/Extensions.cs	Added XML docs to all extension methods.
src/Aspire.ProjectTemplates/templates/aspire-starter/9.1/Aspire-StarterApplication.1.ServiceDefaults/Extensions.cs	Added XML docs to all extension methods.

Comments suppressed due to low confidence (1)

playground/seq/Seq.ServiceDefaults/Extensions.cs:17

• The XML summary for AddServiceDefaults mentions 'service discovery' and 'HTTP client defaults', but the method implementation only configures OpenTelemetry and health checks. Consider updating the documentation to accurately reflect the implemented functionality.

/// Adds default services to the host application builder, including OpenTelemetry configuration, default health checks, service discovery, and HTTP client defaults.

[saibimajdi]

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