Ignore scheduled onDeviceGone call on simulated device if it is already no longer present.

Bug: 259286481
Bug: 253637009
Test: atest CtsCompanionDeviceManagerCoreTestCases
      atest CtsCompanionDeviceManagerUiAutomationTestCases
Change-Id: Ia7f5eabde8879ff4f6bc5b5cc19455bbd4164ac9
Merged-In: Ia7f5eabde8879ff4f6bc5b5cc19455bbd4164ac9
(cherry picked from commit bfbf0e4b)