[Bug]: Cannot create a Project object with the long path prefix \\?\.

### Issue Description

Trying to create a `Project` object from a long path when using .NET Framework does not work - fails with various exceptions.

### Steps to Reproduce

The following unit test passes, when it should fail on the first or second assertion:
```csharp
[Test]
public void ProjectPath()
{
var path = ... ; // some project path 255 characters long
Assert.That(() => new Project(path, new Dictionary(), null), Throws.Exception);
Assert.That(() => new Project(@"\\?\" + path, new Dictionary(), null), Throws.Exception);
path = ... ; // a shorter project path
_ = new Project(path, new Dictionary(), null);
}
```
An important detail - the code must be targeting .NET Framework.

### Expected Behavior

Using a long path should work. At least with the `\\?\` prefix.

### Actual Behavior

Either long path variant result in an exception. Albeit a different one.

### Analysis

_No response_

### Versions & Configurations

_No response_