Respect parentheses for precedence in await (#7468)

## Summary

We were using `Parenthesize::IfBreaks` universally for `await`, but
dropping parentheses can change the AST due to precedence. It turns out
that Black's rules aren't _exactly_ the same as operator precedence
(e.g., they leave parentheses around `await ([1, 2, 3])`, although they
aren't strictly required).

Closes https://github.com/astral-sh/ruff/issues/7467.

## Test Plan

`cargo test`

No change in similarity.

Before:

| project | similarity index | total files | changed files |

|--------------|------------------:|------------------:|------------------:|
| cpython | 0.76083 | 1789 | 1632 |
| django | 0.99982 | 2760 | 37 |
| transformers | 0.99957 | 2587 | 398 |
| twine | 1.00000 | 33 | 0 |
| typeshed | 0.99983 | 3496 | 18 |
| warehouse | 0.99929 | 648 | 16 |
| zulip | 0.99962 | 1437 | 22 |

After:

| project | similarity index | total files | changed files |

|--------------|------------------:|------------------:|------------------:|
| cpython | 0.76083 | 1789 | 1632 |
| django | 0.99982 | 2760 | 37 |
| transformers | 0.99957 | 2587 | 398 |
| twine | 1.00000 | 33 | 0 |
| typeshed | 0.99983 | 3496 | 18 |
| warehouse | 0.99929 | 648 | 16 |
| zulip | 0.99962 | 1437 | 22 |

crates/ruff_python_formatter/src/expression/expr_bin_op.rs

@@ -33,7 +33,7 @@ impl NeedsParentheses for ExprBinOp {
         parent: AnyNodeRef,
         context: &PyFormatContext,
     ) -> OptionalParentheses {
-        if parent.is_expr_await() && !self.op.is_pow() {
+        if parent.is_expr_await() {
             OptionalParentheses::Always
         } else if let Expr::Constant(constant) = self.left.as_ref() {
             // Multiline strings are guaranteed to never fit, avoid adding unnecessary parentheses

crates/ruff_python_formatter/src/expression/expr_bool_op.rs

@@ -19,10 +19,14 @@ impl FormatNodeRule<ExprBoolOp> for FormatExprBoolOp {
 impl NeedsParentheses for ExprBoolOp {
     fn needs_parentheses(
         &self,
-        _parent: AnyNodeRef,
+        parent: AnyNodeRef,
         _context: &PyFormatContext,
     ) -> OptionalParentheses {
-        OptionalParentheses::Multiline
+        if parent.is_expr_await() {
+            OptionalParentheses::Always
+        } else {
+            OptionalParentheses::Multiline
+        }
     }
 }
 

crates/ruff_python_formatter/src/expression/expr_compare.rs

@@ -31,10 +31,12 @@ impl FormatNodeRule<ExprCompare> for FormatExprCompare {
 impl NeedsParentheses for ExprCompare {
     fn needs_parentheses(
         &self,
-        _parent: AnyNodeRef,
+        parent: AnyNodeRef,
         context: &PyFormatContext,
     ) -> OptionalParentheses {
-        if let Expr::Constant(constant) = self.left.as_ref() {
+        if parent.is_expr_await() {
+            OptionalParentheses::Always
+        } else if let Expr::Constant(constant) = self.left.as_ref() {
             // Multiline strings are guaranteed to never fit, avoid adding unnecessary parentheses
             if !constant.value.is_implicit_concatenated()
                 && is_multiline_string(constant, context.source())

crates/ruff_python_formatter/src/expression/expr_generator_exp.rs

@@ -91,10 +91,14 @@ impl FormatNodeRule<ExprGeneratorExp> for FormatExprGeneratorExp {
 impl NeedsParentheses for ExprGeneratorExp {
     fn needs_parentheses(
         &self,
-        _parent: AnyNodeRef,
+        parent: AnyNodeRef,
         _context: &PyFormatContext,
     ) -> OptionalParentheses {
-        OptionalParentheses::Never
+        if parent.is_expr_await() {
+            OptionalParentheses::Always
+        } else {
+            OptionalParentheses::Never
+        }
     }
 }
 

crates/ruff_python_formatter/src/expression/expr_if_exp.rs

@@ -85,10 +85,14 @@ impl FormatNodeRule<ExprIfExp> for FormatExprIfExp {
 impl NeedsParentheses for ExprIfExp {
     fn needs_parentheses(
         &self,
-        _parent: AnyNodeRef,
+        parent: AnyNodeRef,
         _context: &PyFormatContext,
     ) -> OptionalParentheses {
-        OptionalParentheses::Multiline
+        if parent.is_expr_await() {
+            OptionalParentheses::Always
+        } else {
+            OptionalParentheses::Multiline
+        }
     }
 }
 

crates/ruff_python_formatter/src/expression/expr_lambda.rs

@@ -64,9 +64,13 @@ impl FormatNodeRule<ExprLambda> for FormatExprLambda {
 impl NeedsParentheses for ExprLambda {
     fn needs_parentheses(
         &self,
-        _parent: AnyNodeRef,
+        parent: AnyNodeRef,
         _context: &PyFormatContext,
     ) -> OptionalParentheses {
-        OptionalParentheses::Multiline
+        if parent.is_expr_await() {
+            OptionalParentheses::Always
+        } else {
+            OptionalParentheses::Multiline
+        }
     }
 }

crates/ruff_python_formatter/src/expression/expr_unary_op.rs

@@ -72,11 +72,12 @@ impl FormatNodeRule<ExprUnaryOp> for FormatExprUnaryOp {
 impl NeedsParentheses for ExprUnaryOp {
     fn needs_parentheses(
         &self,
-        _parent: AnyNodeRef,
+        parent: AnyNodeRef,
         context: &PyFormatContext,
     ) -> OptionalParentheses {
-        // We preserve the parentheses of the operand. It should not be necessary to break this expression.
-        if is_expression_parenthesized(
+        if parent.is_expr_await() {
+            OptionalParentheses::Always
+        } else if is_expression_parenthesized(
             self.operand.as_ref().into(),
             context.comments().ranges(),
             context.source(),