Fix memory leak due to not removing ended or cancelled tasks

While the tracker session ends abnormaly, we should also remove the task
which is kept by InteractionJankMonitor, or a memory leak happens.

Bug: 184651704
Test: atest FrameworksCoreTests:InteractionJankMonitorTest
Test: atest FrameworksCoreTests:FrameTrackerTest
Change-Id: I56f7759ef39d34cedc795042d3210d9be375cf77