Don't throw exception for SafeCloseable objects

* SafeCloseable objects will have their close() method
called when SandboxContext is destroyed, so we can leave
them out of the allowList.
* Long term we may want to remove the allowList altogether
and just rely on safeCloseable

Test: Locally passes
Flag: not needed
Bug: 280463854
Change-Id: I317a9d6639b25a522fe9dbcf2655b55ec68fded6