Nhat Nguyen 4511611802 Fix testTrackingChannelTask (#57061)
A task might not be canceled on disconnection if it is completed before the cancellation
is started. We need to relax the assertion in this test.

Closes #56746
2020-05-25 09:53:50 -04:00
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2020-05-25 09:53:50 -04:00