GenericLwfDelayDetachRx is flaky

[mtfriesen]

WS2019 debug https://github.com/microsoft/xdp-for-windows/actions/runs/10306657513/job/28537024134?pr=638#step:6:317

2024-08-08T21:21:01.8208845Z   Passed GenericRxForwardGroTcpOptionsV6 [1 m 21 s]
2024-08-08T21:21:32.8483577Z Timer.IsExpired() not false
2024-08-08T21:21:38.8471319Z   Failed GenericLwfDelayDetachRx [37 s]
2024-08-08T21:21:38.8487219Z   Error Message:
2024-08-08T21:21:38.8489646Z    Assert failed. Stop test execution.
2024-08-08T21:21:38.8493007Z   Stack Trace:
2024-08-08T21:21:38.8496144Z   	at StopTest() in D:\a\xdp-for-windows\xdp-for-windows\test\functional\taef\tests.cpp:line 36
2024-08-08T21:21:38.8497571Z 	at GenericLwfDelayDetach() in D:\a\xdp-for-windows\xdp-for-windows\test\functional\lib\tests.cpp:line 6473
2024-08-08T21:21:38.8509327Z   Standard Output Messages:
2024-08-08T21:21:38.8512528Z  Timer.IsExpired() not false