fix: md table cell content leaking

src/component/markdown.rs

@@ -578,11 +578,11 @@ impl MarkdownText {
                         cell_blocks.push(builder.build());
                         current_col_count += 1;
 
+                        builder.clear();
+
                         if !cursor.goto_next_sibling() {
                             break;
                         }
-
-                        builder.clear();
                     }
 
                     cursor.goto_parent();