Fix instability with await fluent style (#8676)

Fix an instability where await was followed by a breaking fluent style
expression:

```python
test_data = await (
    Stream.from_async(async_data)
    .flat_map_async()
    .map()
    .filter_async(is_valid_data)
    .to_list()
)
```

Note that this technically a minor style change (see ecosystem check)

crates/ruff_python_formatter/src/expression/expr_await.rs

@@ -20,7 +20,7 @@ impl FormatNodeRule<ExprAwait> for FormatExprAwait {
             [
                 token("await"),
                 space(),
-                maybe_parenthesize_expression(value, item, Parenthesize::IfRequired)
+                maybe_parenthesize_expression(value, item, Parenthesize::IfBreaks)
             ]
         )
     }