test: update cmd context in tests

Update the test context setup in `src/command/cmd.rs` to use the new
`display_value` field instead of the removed `records_col` and `records_value`
fields.

Co-Authored-By: fiddlerwoaroof/git-smart-commit (unsloth/gemma-4-31B-it-GGUF:UD-Q5_K_XL)

src/command/cmd.rs

@@ -3064,8 +3064,13 @@ mod tests {
             none_cats: layout.none_cats.clone(),
             view_back_stack: Vec::new(),
             view_forward_stack: Vec::new(),
-            records_col: None,
-            records_value: None,
+            display_value: {
+                let key = layout.cell_key(sr, sc);
+                key.as_ref()
+                    .and_then(|k| model.get_cell(k).cloned())
+                    .map(|v| v.to_string())
+                    .unwrap_or_default()
+            },
             cell_key: layout.cell_key(sr, sc),
             row_count: layout.row_count(),
             col_count: layout.col_count(),