ExpectMsgFromAsync throws Format Excepion

[biasc]

Version Information
Version of Akka.NET?
Akka.TestKit 1.5.33

Describe the bug
The method:
public ValueTask ExpectMsgFromAsync(
Predicate isSender,
Predicate isMessage,
TimeSpan? timeout = null,
string hint = null,
CancellationToken cancellationToken = default)

always throws exception.

To Reproduce
Steps to reproduce the behavior:

1. Download the project
2. Run the unit test (the test Test_Receive_Response_From_Specific_Child throws exception)

Link to the test project:
https://github.com/biasc/Akka-Bug-Report2

Expected behavior
Unit test should pass

Environment
Windows 11, net8.0

[milang]

@biasc see akkadotnet/Akka.TestKit.NUnit#160 (comment) for recommended fix.

This is the same issue we had in Akka.TestKit.NUnit, see akkadotnet/Akka.TestKit.NUnit#159 for more info.