String length assertions broken

[Randactyl]

The TUnit documentation shows that HasLength() should support chained comparisons, but in version 1.2.11 HasLength() returns a LengthWrapper type that doesn't contain comparison methods like GreaterThan(), LessThan(), etc.

Expected Behavior:

According to the TUnit String Assertions documentation, the following code should work:

[Test]
public async Task Length_With_Comparison()
{
    var username = "alice";
    await Assert.That(username)
        .HasLength().GreaterThan(3)
        .And.HasLength().LessThan(20);
}

Actual Behavior:

The code fails to compile with the following error:
error CS1061: 'LengthWrapper' does not contain a definition for 'GreaterThan' and no accessible extension method 'GreaterThan' accepting a first argument of type 'LengthWrapper' could be found (are you missing a using directive or an assembly reference?)

Reproduction:

[Test]
public async Task StringHasLength()
{
    string str1 = "Hello, World!";
    await Assert.That(str1).HasLength().GreaterThan(5);
}

Environment:

TUnit Version: 1.2.11
Target Framework: .NET 10.0

Additional Notes:

I didn't try every version, but the earliest version of TUnit I noticed this broken in is 0.70.0.