Problem/Motivation
When creating a workflow view for a user to find content that they are able to moderate, it would be nice to be able to filter for a given state (eg, Published) that a user can moderate content to.
For instance, if the user has access to 10 nodes, but 3 of them are in a state from which they don't have permission to move to Published, those could be filtered out
via this new filter.
Proposed resolution
Add a Views filter that takes into account the current user's access to transitions to one or more states.
The UI would present a list of to states (Published, Draft, etc).
The filter would then loop through transitions to those states and filter only content in the available transition's from state.