Disable top-level docstring formatting for notebooks (#9957)

crates/ruff_python_formatter/src/range.rs

@@ -214,9 +214,9 @@ impl<'ast> PreorderVisitor<'ast> for FindEnclosingNode<'_, 'ast> {
         // Don't pick potential docstrings as the closest enclosing node because `suite.rs` than fails to identify them as
         // docstrings and docstring formatting won't kick in.
         // Format the enclosing node instead and slice the formatted docstring from the result.
-        let is_maybe_docstring = node
-            .as_stmt_expr()
-            .is_some_and(|stmt| DocstringStmt::is_docstring_statement(stmt));
+        let is_maybe_docstring = node.as_stmt_expr().is_some_and(|stmt| {
+            DocstringStmt::is_docstring_statement(stmt, self.context.options().source_type())
+        });
 
         if is_maybe_docstring {
             return TraversalSignal::Skip;