ReadOnlyMemory<byte> assertions

[thomhurst]

Discussed in #5073

^{Originally posted by rodrigovaras March 3, 2026}
Our API returns back protocol payloads as ReadOnlyMemory, what is the best way to assert it to a set of other bytes[] ?
It seems that this is failing:
await Assert.That(rawPayload).IsEquivalentTo(new byte[]{...});