chore: pin @opennextjs/cloudflare to 0.2.x (#7616)

Release 0.3 requires updating the template.
We'll do that in a follow up PR

Author: vicb

packages/create-cloudflare/templates-experimental/next/c3.ts

@@ -18,7 +18,10 @@ const generate = async (ctx: C3Context) => {
 };
 
 const configure = async () => {
-	const packages = ["@opennextjs/cloudflare", "@cloudflare/workers-types"];
+	const packages = [
+		"@opennextjs/[email protected]",
+		"@cloudflare/workers-types",
+	];
 	await installPackages(packages, {
 		dev: true,
 		startText: "Adding the Cloudflare adapter",