Events State node: allow template for entity input

[jj-uk]

The Entity input for the state note cannot be a template. I'd like to ask if this can be added at some point.
Others nodes allow template as entity inputs, e.g. current state node.

Edit: Humm, as these's no input to this node, it's probably not possible to pass in a template. Maybe accept a flow var containing a list of entities.

[zachowj]

The events: state node requires static entity IDs because it registers event listeners at deployment. To achieve dynamic filtering, use an events: all node set to listen for the state_changed event, followed by a switch node to filter specific entity IDs based on a flow context variable. This approach will allow for flexible and dynamic entity filtering.