Evaluate whether to consider internal pages for dirtied by a transaction

        /*

         * For application threads, track the transaction bytes added to cache usage. We want to

         * capture only the application's own changes to page data structures. Exclude changes to

         * internal pages or changes that are the result of the application thread being co-opted

         * into eviction work.

         */

        if (!F_ISSET(session, WT_SESSION_INTERNAL) &&

          F_ISSET(session->txn, WT_TXN_RUNNING | WT_TXN_HAS_ID) &&

          __wt_session_gen(session, WT_GEN_EVICT) == 0)

            WT_STAT_SESSION_INCRV(session, txn_bytes_dirty, size);