Move row check to requestPipeline instead of start

When aborting the state happens before the row check, it is possible to
abort the row inflation task since we use entry.abortTask() as the
underlying abortStage implementation. This CL moves the check to
requestPipeline before the abortStage call.

Bug: 153295369
Test: Call phone. See notification at top
Change-Id: Ic48c2051f3d3aa655496b19530e7e055708afe14