Catch IAE from unbind onServiceDisconnected()

We still don't know the underlying cause of this, but we shouldn't crash
the system_server. Catching for now.

Bug: 74940472
Bug: 77574274
Test: m -j RunFrameworksServicesRoboTests
Change-Id: I36fc2e65f8766f6b8fd68104d8830b72668d84eb