fix wildcard routes being skipped by fast path method lookup closes #693

[KnifeLemon]

Fixes the route registration order regression introduced in v3.17.1 by the method-specific fast path added in #658.

closes #693

Fix

Store routes in routesByMethod using their global index in $routes as the array key. When building the fast path candidates, merge the two buckets and ksort by key to restore registration order.

// map() — use global route index as key
$this->routesByMethod[$method][count($this->routes) - 1] = $route;

// route() — merge and sort by registration order
$candidates = ($this->routesByMethod[$requestMethod] ?? []) + ($this->routesByMethod['*'] ?? []);
ksort($candidates);

Now the merged candidates are always in registration order regardless of method, and the fast path performance benefit (only URL-matching against eligible routes) is preserved.

Testing

Added regression test testWildcardPassthroughRouteBeforeSpecificGetRoute in RouterTest.

> phpunit --filter RouterTest
PHPUnit 9.6.34 by Sebastian Bergmann and contributors.

Runtime:       PHP 8.3.29
Configuration: C:\FlightPHP\core\phpunit.xml.dist
Random Seed:   1776965395

................................................................. 65 / 66 ( 98%)
.                                                                 66 / 66 (100%)

Time: 00:00.031, Memory: 8.00 MB

OK (66 tests, 87 assertions)