refactor: hide logical comparison rows from painting

tests/unit/tui.rs

@@ -1,4 +1,5 @@
 use super::*;
+use crate::diff::RowKind;
 use crate::plugin::TextPosition;
 use std::{
     fs,
@@ -2403,7 +2404,7 @@ fn diff_scope_labels_identify_multiple_scopes_and_sticky_renamed_sides() {
             assert_eq!(rows[0].scope, [true; 2]);
             assert_eq!(rows[1].scope, [false; 2]);
             assert_eq!(rows[0].position, rows[1].position);
-            let first = diff_screen_rows(&diff, diff.top, 48, Some(rows))
+            let first = diff_screen_rows(diff.display_rows.len(), diff.top, 48, Some(rows))
                 .next()
                 .unwrap();
             assert_eq!((first.0, first.1), (1, diff.top));
@@ -3054,7 +3055,7 @@ fn local_review_highlights_exact_graphemes_newlines_clips_and_wrap_continuations
                         let gutter = diff_gutter(&diff, file, content.width as usize, focus);
                         let width = content.width as usize - gutter;
                         for (screen, display, segments) in
-                            diff_screen_rows(&diff, 0, content.height, wrapped)
+                            diff_screen_rows(diff.display_rows.len(), 0, content.height, wrapped)
                         {
                             let mut expected = vec![false; width];
                             if let DisplayRow::Line(aligned) = diff.display_rows[display] {