fix: check payments.enabled in callback route middleware

[Anshumancanrock]

Description

The requireProcessor middleware now also checks settings.payments.enabled before allowing callback requests through. Previously it only verified the processor name matched, which meant a relay with payments disabled but a processor configured could still accept callbacks.

Related Issue

Follow-up to #597

Motivation and Context

A relay operator might have payments.enabled: false with a processor still configured (e.g. during setup or after disabling payments). Without this check, callback endpoints would still accept and process requests so the middleware should reject early in that case.

How Has This Been Tested?

• All 1261 unit tests passing
• Updated route unit test stub to set enabled: true
• Updated OpenNode integration test setup to set enabled: true

Types of changes

• Bug fix

[changeset-bot]

🦋 Changeset detected

Latest commit: 5563256

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
nostream	Patch

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR

[coveralls]

coverage: 65.086% (+0.1%) from 64.937% — Anshumancanrock:fix/callback-middleware-check-payments-enabled into cameri:main

[cameri]

Thank you @Anshumancanrock !