Add withoutDetection() method for suppressing N+1 detection

[dingyaguang117]

Motivation

The existing except config requires whitelisting by model + relation pair, which is too coarse-grained. In practice, developers often need to suppress detection for a specific code block (e.g. admin pages with small datasets, legacy endpoints, or background jobs) rather than globally whitelisting a relation.

What I did

• Add QueryDetector::withoutDetection(callable $callback) method that temporarily disables N+1 detection for the duration of the closure
• Uses a simple $disabled flag — no reflection or backtrace scanning overhead
• The closure's return value is passed through
• Detection resumes automatically after the closure, even if it throws an exception

Usage

  app(QueryDetector::class)->withoutDetection(function () {
      // N+1 queries here will not be reported
      foreach (Author::all() as $author) {
          $author->posts;
      }
  });