Reimplement BlockSnapshot::{clip_point,to_block_point,max_point}

Co-Authored-By: Nathan Sobo <nathan@zed.dev>

crates/editor/src/display_map.rs

@@ -214,7 +214,6 @@ impl DisplayMapSnapshot {
                     self.tabs_snapshot
                         .to_tab_point(point.to_fold_point(&self.folds_snapshot, bias)),
                 ),
-                bias,
             ),
         )
     }