Extension not decompiling nuget packages right SqlCommand & SqlReader

## Environment data

`dotnet --info` output:

```
.NET SDK:
Version: 7.0.110
Commit: ba920f88ac

Runtime Environment:
OS Name: fedora
OS Version: 38
OS Platform: Linux
RID: fedora.38-x64
Base Path: /usr/lib64/dotnet/sdk/7.0.110/

Host:
Version: 7.0.10
Architecture: x64
Commit: a6dbb800a4

.NET SDKs installed:
7.0.110 [/usr/lib64/dotnet/sdk]

.NET runtimes installed:
Microsoft.AspNetCore.App 7.0.10 [/usr/lib64/dotnet/shared/Microsoft.AspNetCore.App]
Microsoft.NETCore.App 7.0.10 [/usr/lib64/dotnet/shared/Microsoft.NETCore.App]

Other architectures found:
None

Environment variables:
DOTNET_ROOT [/usr/lib64/dotnet]

global.json file:
Not found
```

VS Code version: 1.82.2
C# Extension version: v2.1.2

## Steps to reproduce

1. Install this package https://www.nuget.org/packages/Microsoft.Data.SqlClient/5.1.1
2. Write this code

```c#
using Microsoft.Data.SqlClient;

var builder = new SqlConnectionStringBuilder
{
DataSource = "localhost",
UserID = "sa",
Password = "",
InitialCatalog = ""
};

try
{
using var connection = new SqlConnection(builder.ConnectionString);

Console.WriteLine("\nQuery data example:");
Console.WriteLine("=========================================\n");

connection.Open();

var sql = "SELECT name, age FROM People";

using var command = new SqlCommand(sql, connection);
using var reader = command.ExecuteReader();

while (reader.Read())
{
Console.WriteLine("{0} {1}", reader.GetString(0), reader.GetInt32(1));
}
}
catch (SqlException e)
{
Console.WriteLine(e);
}

Console.WriteLine("\nDone. Press enter.");
```

3. Ctrl + Click the ExecuteReader method

## Expected behavior
Decompiled library successfully with intellisense working

## Actual behavior


Notice there is no type inference for SqlDataReader and its return type is null

## Additional context

When getting intellisense for reader, the list is not complete. In this case is missing the `Dispose()` method.


Looking at SqlClient source code for v5.1.1 the method is [defined](https://github.com/dotnet/SqlClient/blob/v5.1.1/src/Microsoft.Data.SqlClient/netcore/src/Microsoft/Data/SqlClient/SqlDataReader.cs#L830) without a [EditorBrowsable(EditorBrowsableState.Never)] data annotation so it should be showed.

Also tested with VS Code C# Extension v1.26.0, it works but the decompiling is different compared to the source.