Fix misleading documentation about structure assignments in With...End With statements

[Copilot]

• Fix misleading documentation about structure assignments in With...End With statements
• Update documentation to correctly explain when structure member assignments work vs fail
• Add comprehensive code examples showing valid and invalid scenarios
• Add snippets.5000.json file to fix sample build configuration
• Update vbproj file to target .NET Framework 4.8

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Internal previews

📄 File	🔗 Preview link
docs/visual-basic/language-reference/statements/with-end-with-statement.md	With...End With Statement (Visual Basic)

[BillWagner]

@copilot

To get the samples build to work correctly, you need to add a snippets.5000.json file in the "samples/snippets/visualbasic/VS_Snippets_VBCSharp/vbvbalrwithstatement/vb" folder. The contents should be:

{
    "host": "visualstudio"
}

[Copilot]

@copilot

To get the samples build to work correctly, you need to add a snippets.5000.json file in the "samples/snippets/visualbasic/VS_Snippets_VBCSharp/vbvbalrwithstatement/vb" folder. The conte...

Added the snippets.5000.json file with the required host configuration. This should fix the samples build. Commit: 2f7db4b

[BillWagner]

@copilot The vbproj file needs to be updated to use .NET Framework 4.8.

[Copilot]

@copilot The vbproj file needs to be updated to use .NET Framework 4.8.

Updated the vbproj file to target .NET Framework 4.8 and removed the client profile setting. Commit: 69af60f

[BillWagner]

This is ready for final review