More link is broken due to get_path semantics

eva_plugin_display_entity implements get_path but does so in a way that consumers like render_more_link are guaranteed to be wrong, because views_plugin_display's logic never gets a chance to apply.

Our use case is setting the 'more link' to a page display that has arguments like 'node/%/events'. Current EVA behavior is to output NODE_PATH/NID which is wrong. eva_plugin_display_entity's get_path needs to check if a path has been overridden before applying its logic.

I will attach a patch that fixes the issue.