Ensure we clear mPackagesWithShareRequests when a remote exception happens at write() or start(). Bug: 203784652 Test: atest CtsContentCaptureServiceTestCases Change-Id: I35d8c8056dc126c44f03b74a04090861224a9407 (cherry picked from commit 39d8062aec7c5e9938aff089618b50540b0bdbd3)