C#/.NET appears twice in the integrations sidebar #1630

Description

The sidebar on the Aspire integrations page contains two sections for C#/.NET with near-equivalent labels:

• C# and .NET
• .NET / C#

This makes C#/.NET appear duplicated and leaves it unclear which section to use for .NET integration guidance.

Steps to reproduce

1. Open https://aspire.dev/integrations/.
2. Inspect the integrations sidebar under Frameworks and runtimes
3. Observe the C# and .NET and .NET / C# sections.

Expected behavior

Provide a single, clearly organized C#/.NET section, or make the intended distinction between the two sections clear in their labels and organization.

Actual behavior

Two separate sections appear with labels that both describe C#/.NET.