Evaluate default timeout for dispatch:timeout:responseCallback:

[emdobrin]

Extensions usually use the dispatch:timeout:responseCallback: API for getters and rely on the callback timeout value for fast failing in case the operation takes longer than expected so the caller does not wait indefinitely.
Current default timeout in AEPCore is 1 second and 5 seconds in ACPCore.

Evaluate if the default timeout can be bumped to 5 seconds to be in sync with the ACP implementation and/or if extensions need to do any adjustments and set their own timeout.