Update Orleans integration docs to use keyed Azure Storage clients

[Copilot]

Orleans 9.2.1+ requires keyed service registrations for Azure Storage clients when used with Aspire. Using non-keyed APIs (AddAzureBlobClient, AddAzureTableClient) throws InvalidOperationException about missing keyed clients.

Updated API calls in Orleans documentation:

• Server projects: AddAzureBlobClient("grainstate") → AddKeyedAzureBlobServiceClient("grainstate")
• Server projects: AddAzureTableClient("clustering") → AddKeyedAzureTableServiceClient("clustering")
• Client projects: AddAzureTableClient("clustering") → AddKeyedAzureTableServiceClient("clustering")

Before:

builder.AddAzureTableClient("clustering");
builder.AddAzureBlobClient("grainstate");
builder.UseOrleans();

After:

builder.AddKeyedAzureTableServiceClient("clustering");
builder.AddKeyedAzureBlobServiceClient("grainstate");
builder.UseOrleans();

Original prompt

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This section details on the original issue you should resolve

<issue_title>Instructions for Orleans Integration do not work with latest Orleans 9.2.1 and Aspire 13.1.0</issue_title>
<issue_description>When using the latest Orleans 9.2.1 and Aspire 13.1.0, I had to make the following changes in the Program.cs

builder.AddKeyedAzureBlobServiceClient("grainstate"); // Originally: builder.AddAzureBlobClient("grainstate");
builder.AddKeyedAzureTableServiceClient("clustering"); // Originally: builder.AddAzureTableClient("clustering");

If you don't make this change in both the client and server, then it will throw an InvalidOperationException about not being able to find a keyed Table/Blob client.</issue_description>

<agent_instructions>Please update the orleans content to use the latest versions and verify the APIs documented. Do not include version numbers in any of the updates.</agent_instructions>

Comments on the Issue (you are @copilot in this section)

• Fixes Instructions for Orleans Integration do not work with latest Orleans 9.2.1 and Aspire 13.1.0 #199

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[Copilot]

Pull request overview

This PR updates the Orleans integration documentation to use keyed Azure Storage client registration methods, which are required for Orleans 9.2.1+ when used with Aspire. The documentation now correctly shows the use of AddKeyedAzureTableServiceClient and AddKeyedAzureBlobServiceClient instead of the non-keyed versions that would cause InvalidOperationException at runtime.

• Updated API calls from non-keyed to keyed service registration methods for Azure Storage clients
• Applied changes consistently across all Orleans server and client code examples
• Addresses runtime exceptions that occur when using non-keyed APIs with recent Orleans and Aspire versions

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