Implement Display for SharedValueSeries

The `Value::Object` variant in `ast/types.rs` has been updated to
provide a more specific display format for `SharedValueSeries`.
Previously, it would generically display the object's type name. This
change allows it to directly show the length of the `SharedValueSeries`
buffer, which is more informative.

src/ast/types.rs

@@ -655,20 +655,7 @@ impl fmt::Display for Value {
             }
             Value::FieldAccessor(k) => write!(f, ".{}", k.name()),
             Value::Function(f_meta) => write!(f, "<native fn, {:?}>", f_meta.purity),
-            Value::Object(o) => {
-                if let Some(val_series) =
-                    o.as_any()
-                        .downcast_ref::<crate::ast::rtl::series::SharedValueSeries>()
-                {
-                    write!(
-                        f,
-                        "SharedValueSeries[len: {}]",
-                        val_series.buffer.borrow().len()
-                    )
-                } else {
-                    write!(f, "<{}>", o.type_name())
-                }
-            }
+            Value::Object(o) => write!(f, "<{:?}>", o),
             Value::Cell(c) => write!(f, "{}", c.borrow()),
             Value::TailCallRequest(_) => write!(f, "<tail call request>"),
         }