Apply suggestions from code review

Co-authored-by: Rich Harris <rich.harris@vercel.com>

packages/svelte/src/compiler/phases/3-transform/server/visitors/IfBlock.js

@@ -16,10 +16,10 @@ export function IfBlock(node, context) {
 		? /** @type {BlockStatement} */ (context.visit(node.alternate))
 		: b.block([]);
 
-	consequent.body.unshift(b.stmt(b.call(b.member(b.id('$$payload'), b.id('push')), block_open)));
+	consequent.body.unshift(b.stmt(b.call(b.id('$$payload.push'), block_open)));
 
 	alternate.body.unshift(
-		b.stmt(b.call(b.member(b.id('$$payload'), b.id('push')), block_open_else))
+		b.stmt(b.call(b.id('$$payload.push'), block_open_else))
 	);
 
 	/** @type {Statement} */

packages/svelte/src/compiler/phases/types.d.ts

@@ -2,7 +2,6 @@ import type { AST, Binding, StateField } from '#compiler';
 import type {
 	CallExpression,
 	ClassBody,
-	Expression,
 	Identifier,
 	LabeledStatement,
 	Program