Avoid omitting parentheses for trailing attributes on call expressions (#6322)

## Summary

This PR modifies our `can_omit_optional_parentheses` rules to ensure
that if we see a call followed by an attribute, we treat that as an
attribute access rather than a splittable call expression.

This in turn ensures that we wrap like:

```python
ct_match = aaaaaaaaaaact_id == self.get_content_type(
    obj=rel_obj, using=instance._state.db
)
```

For calls, but:

```python
ct_match = (
    aaaaaaaaaaact_id == self.get_content_type(obj=rel_obj, using=instance._state.db).id
)
```

For calls with trailing attribute accesses.

Closes https://github.com/astral-sh/ruff/issues/6065.

## Test Plan

Similarity index before:

- `zulip`: 0.99436
- `django`: 0.99779
- `warehouse`: 0.99504
- `transformers`: 0.99403
- `cpython`: 0.75912
- `typeshed`: 0.72293

And after:

- `zulip`: 0.99436
- `django`: 0.99780
- `warehouse`: 0.99504
- `transformers`: 0.99404
- `cpython`: 0.75913
- `typeshed`: 0.72293

crates/ruff_python_formatter/src/expression/mod.rs

@@ -178,10 +178,9 @@ impl Format<PyFormatContext<'_>> for MaybeParenthesizeExpression<'_> {
             Parenthesize::Optional | Parenthesize::IfBreaks => needs_parentheses,
         };
 
-        let can_omit_optional_parentheses = can_omit_optional_parentheses(expression, f.context());
         match needs_parentheses {
             OptionalParentheses::Multiline if *parenthesize != Parenthesize::IfRequired => {
-                if can_omit_optional_parentheses {
+                if can_omit_optional_parentheses(expression, f.context()) {
                     optional_parentheses(&expression.format().with_options(Parentheses::Never))
                         .fmt(f)
                 } else {
@@ -407,9 +406,12 @@ impl<'input> CanOmitOptionalParenthesesVisitor<'input> {
                 attr: _,
                 ctx: _,
             }) => {
+                self.visit_expr(value);
                 if has_parentheses(value, self.source) {
                     self.update_max_priority(OperatorPriority::Attribute);
                 }
+                self.last = Some(expr);
+                return;
             }
 
             Expr::NamedExpr(_)