(Created as a result of WT-10270)

There are a number of row- and column-specific API calls made from RTS. Ideally it would not need to be aware of the access method type:

• wt_col_modify
• wt_col_search
• wt_row_leaf_key
• wt_row_leaf_value_cell
• wt_row_modify
• wt_row_search
• wt_tree_walk_custom_skip

It's worth reviewing the RTS code using these to see if a top-level cursor could be created and used instead - to that end, this ticket is marked as dependent on WT-10813.