[workers] Update enable_date for enable_ctx_exports compat flag. (#26258)

As set in: cloudflare/workerd#5455

Author: kentonv

src/content/compatibility-flags/enable-ctx-exports.md

@@ -5,10 +5,10 @@ _build:
   list: never
 
 name: "Enable ctx.exports"
-sort_date: "2025-09-24"
+sort_date: "2025-11-17"
+enable_date: "2025-11-17"
 enable_flag: "enable_ctx_exports"
+disable_flag: "disable_ctx_exports"
 ---
 
 This flag enables [the `ctx.exports` API](/workers/runtime-apis/context/#exports), which contains automatically-configured loopback bindings for your Worker's top-level exports. This allows you to skip configuring explicit bindings for your `WorkerEntrypoint`s and Durable Object namespaces defined in the same Worker.
-
-We may change this API to be enabled by default in the future (regardless of compat date or flags).