fix(context): Fix #4427 type regression by removing non-public export

[aantthony]

I think this fixes #4427

Example test code:

import { createFactory } from 'hono/factory';
const factory = createFactory();
export const handlers = factory.createHandlers(c =>
	c.json({ ok: true }),
);

With the type exported (since v4.9.8), I was getting the error:

ts(2742): The inferred type of 'handlers' cannot be named without a reference to '../node_modules/hono/dist/types/context.js'. This is likely not portable. A type annotation is necessary.

By avoiding the export, there is no type error. Removing this export should not create any issues as far as I know, because it is not imported anywhere or publicly exposed outside hono itself.

The author should do the following, if applicable

• Add tests
• Run tests
• bun run format:fix && bun run lint:fix to format the code
• Add TSDoc/JSDoc to document the code

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 91.25%. Comparing base (16eb882) to head (d3f14df).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #4433   +/-   ##
=======================================
  Coverage   91.25%   91.25%           
=======================================
  Files         171      171           
  Lines       10915    10915           
  Branches     3146     3146           
=======================================
  Hits         9961     9961           
  Misses        953      953           
  Partials        1        1           

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.

[BarryThePenguin]

Whoops.. looks like I inadvertently changed that in #4406

Looks good 👍🏻

[yusukebe]

LGTM!

[yusukebe]

@aantthony

Thank you!