Fix dashboard route overwritten by home redirect when using tenant slug attribute (#19584)

* Fix dashboard route overwritten by home redirect when using tenant slug attribute

`Route::getLastGroupPrefix()` returns the raw group prefix including
binding syntax (e.g. `admin/{tenant:slug}`), but Laravel's
`RouteCollection` indexes routes by the normalized URI without binding
syntax (e.g. `admin/{tenant}`). The `isset()` check on line 182 fails
due to this key mismatch when a tenant slug attribute is configured,
causing the home redirect to be created at `/` and overwrite the
Dashboard route.

The fix strips binding syntax from the root URI before looking it up
in the route collection.

Fixes filamentphp/filament#19582

* update snapshots

---------

Co-authored-by: Dan Harrin <git@danharrin.com>

tests/database/factories/TeamFactory.php

@@ -13,6 +13,7 @@ class TeamFactory extends Factory
     {
         return [
             'name' => $this->faker->company(),
+            'slug' => $this->faker->unique()->slug(),
             'description' => $this->faker->sentence(),
         ];
     }

tests/database/migrations/0001_create_teams_table.php

@@ -11,6 +11,7 @@ return new class extends Migration
         Schema::create('teams', function (Blueprint $table): void {
             $table->id();
             $table->string('name');
+            $table->string('slug')->unique()->nullable();
             $table->text('description')->nullable();
             $table->decimal('budget', 10, 2)->default(0);
             $table->foreignId('company_id')->nullable();