[Bug]: Collection assertions don't work when type given to Assert.That is ICollection/ICollection<T>

[SeanGriffin-Wellsky]

Description

Similar to the issues described in #4387 and #4418, the collection assertions don't work when the type given to Assert.That is ICollection or ICollection<T>.

This compiles:

IEnumerable<int> numbers = [1, 2, 3];
await Assert.That(numbers).IsEmpty();

This does not:

ICollection<int> numbers2 = [1, 2, 3];
await Assert.That(numbers2).IsEmpty();

The type that is returned when an ICollection is given to That() is ValueAssertion not CollectionAssertion.

Expected Behavior

Giving an ICollection or ICollection<T> to Assert.That will return CollectionAssertion<T>.

Actual Behavior

It returns ValueAssertion

Steps to Reproduce

[Test]
public async Task CollectionAssertionTest()
{
    ICollection<int> nums = [1, 2, 3];
    await Assert.That(nums).IsEmpty();
}

TUnit Version

1.11.45

.NET Version

.NET10

Operating System

macOS

IDE / Test Runner

JetBrains Rider

Error Output / Stack Trace

Additional Context

No response

IDE-Specific Issue?

• I've confirmed this issue occurs when running via dotnet test or dotnet run, not just in my IDE