Log exception stack traces to file system, too

This change makes sure that stack traces are logged to the
`ThrowableStorage`, too, so they are available in
`Data/Logs/Exceptions` for debugging purposes.

Configuration/Settings.yaml

@@ -11,9 +11,3 @@ Neos:
     log:
       systemLogger:
         backend: Flownative\Sentry\Log\SentryFileBackend
-
-    error:
-      exceptionHandler:
-        defaultRenderingOptions:
-          # Disable logging of exceptions, because they are already processed by Sentry
-          logException: false