cherry pick perf(over window): series of performance improvements to release-2.0

[stdrc]

• refactor(over window): move build_changes to OverPartition for better modularity #18846
• feat(over window): add compute count metric for general over window executor #18847
• feat(over window): add over_window_accessed_entry_count to metric for better observability #18943
• perf(over window): avoid recompute information about window frames #19036
• perf(over window): pass through Updates not affecting window function outputs #19056
• perf(over window): skip remaining affected rows when rank is not changed #18950
• perf(over window): O(1) impl for delta_btree_map::CursorWithDelta::move_next  #19214