Speak a shell destination's badge in words, and stop a null offset on PHP 8.5

<x-app-shell> passed no badge label to its rail and bar items, so a badge
like 0/3 reached a screen reader bare; a destination's badgeLabel now does.

The head script indexed the profiles with a null scheme when none are
configured, which PHP 8.5 reports as a deprecated null array offset on every
page with theme.meta on. It reads the default scheme without the lookup.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01RHoXZSHc8gGpZjFmA5fPc2

tests/Feature/Components/ThemeScriptTest.php

@@ -107,3 +107,23 @@ it('gives the theme-color meta every profile\'s surfaces, the active one\'s firs
         File::delete($path);
     }
 });
+
+it('paints the meta without profiles and without a deprecation on PHP 8.5', function () {
+    config(['livewire-material.theme.meta' => true, 'livewire-material.profiles' => []]);
+
+    $deprecations = [];
+    set_error_handler(function (int $level, string $message) use (&$deprecations): bool {
+        $deprecations[] = $message;
+
+        return true;
+    }, E_DEPRECATED | E_USER_DEPRECATED);
+
+    try {
+        $html = (string) $this->blade('<x-theme-script />');
+    } finally {
+        restore_error_handler();
+    }
+
+    expect($html)->toContain('"meta":{')
+        ->and($deprecations)->toBe([]);
+});