FSX file in Visual Studio attempts to load .NET 7 assemblies

Visual Studio cannot confuses NET FW and NET probably. When I have FSX opened in Ionide, then type provider works fine.

**Repro steps**

1. Create test.fsx with following content
```fsharp
#r "nuget: Npgsql"
#r "nuget: SQLProvider"
open FSharp.Data.Sql

let [] connectionString = "Host=localhost;Port=5432;Database=backend;Username=konaev;Password="

// create a type alias with the connection string and database vendor settings
type sql = SqlDataProvider
```
2. Open test.fsx in visual studio.

**Expected behavior**

I would like to have no errors in Visual Studio.

**Actual behavior**


```
The type provider 'FSharp.Data.Sql.SqlTypeProvider' reported an error: Unable to load one or more of the requested types. Retrieve the LoaderExceptions property for more information.
Details:
Could not load file or assembly 'System.Runtime, Version=7.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies. The system cannot find the file specified.
Could not load file or assembly 'System.Data.Common, Version=7.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies. The system cannot find the file specified.
Could not load file or assembly 'System.Diagnostics.Tracing, Version=7.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies. The system cannot find the file specified.
Could not load file or assembly 'System.Threading, Version=7.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies. The system cannot find the file specified.
Could not load file or assembly 'System.ComponentModel.TypeConverter, Version=7.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies. The system cannot find the file specified.
Current execution platform: .NETFramework,Version=v4.7.2
```

**Known workarounds**

Provide a description of any known workarounds.

**Related information**

Provide any related information (optional):

* Operating system
* .NET Runtime kind (.NET Core, .NET Framework, Mono)
* Editing Tools (e.g. Visual Studio Version, Visual Studio) Version 17.7.0 Preview 2.0