Raw value storage

[BodukGenius]

Describe the bug

I am experiencing a System.NullReferenceException error when attempting to set a value using the #!set magic command in a .NET Interactive notebook. The error occurs when I try to assign a URL value to a variable in the notebook environment. Below is the error message and stack trace provided:

Error: System.NullReferenceException: Object reference not set to an instance of an object.
at Microsoft.DotNet.Interactive.KeyValueStoreKernel.Microsoft.DotNet.Interactive.IKernelCommandHandler<Microsoft.DotNet.Interactive.Commands.SubmitCode>.HandleAsync(SubmitCode command, KernelInvocationContext context) in D:\a_work\1\s\src\Microsoft.DotNet.Interactive\KeyValueStoreKernel.cs:line 79
at Microsoft.DotNet.Interactive.Kernel.HandleAsync(KernelCommand command, KernelInvocationContext context) in D:\a_work\1\s\src\Microsoft.DotNet.Interactive\Kernel.cs:line 330
at Microsoft.DotNet.Interactive.KernelCommandPipeline.<BuildPipeline>b__6_0(KernelCommand command, KernelInvocationContext context, KernelPipelineContinuation _) in D:\a_work\1\s\src\Microsoft.DotNet.Interactive\KernelCommandPipeline.cs:line 60
at Microsoft.DotNet.Interactive.KernelCommandPipeline.SendAsync(KernelCommand command, KernelInvocationContext context) in D:\a_work\1\s\src\Microsoft.DotNet.Interactive\KernelCommandPipeline.cs:line 41

The notebook content where the issue occurred is as follows:

#!meta

{"kernelInfo":{"defaultKernelName":"csharp","items":[{"aliases":[],"name":"csharp"}]}}

#!value

#!set --name url --value https://example.com/

Please complete the following:

Which version of .NET Interactive are you using? (In a notebook, run the #!about magic command. ):
Version: 1.0.520801+1e5d205f82c7f5bb1b2e5ce60c680491552cfa23
Library version: 1.0.0-beta.24208.1+1e5d205f82c7f5bb1b2e5ce60c680491552cfa23
Build date: 2024-04-19T23:36:03.3519914Z

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