• Performance - Optimized the performance of activity data queries made via the learndash_reports_get_activity() function, especially for sites with many posts and users when their activity meta is fetched.
• Performance - Optimized activity widget by not querying additional activity meta that it doesn't use.
• Performance - Optimized the progress chart widget by lowering memory consumption and improving its performance on large sites.
• Performance - Optimized functions: `learndash_reports_get_activity`.
• Tweak - Updated functions: `learndash_reports_get_activity`.
• Tweak - Added filters: `learndash_user_activity_meta_query_joins`, `learndash_user_activity_meta_query_where`, `learndash_user_activity_query_group_by`, `learndash_user_activity_results`.

bugfix

• Fix - Fixed activity widget not showing activity for cases when a user gets enrolled in a course.
• Fix - Fixed activity widget not respecting the statuses set in the filter.