Drop user contract type hint from gate and policy methods

When the eloquent users repository is used, Laravel's Gate dispatches
the host app's Authenticatable model (e.g. App\Models\User), which
doesn't implement Statamic\Contracts\Auth\User. UserFacade::fromUser()
already converts any Authenticatable into the contract before checks,
so the type hints just blocked non-super users from the SEO pages.

Fixes #108.

Author: aerni

src/Gates/SeoContentGate.php

@@ -4,15 +4,14 @@
 
 use Aerni\AdvancedSeo\AdvancedSeo;
 use Aerni\AdvancedSeo\SeoSets\SeoSet;
-use Statamic\Contracts\Auth\User;
 use Statamic\Facades\User as UserFacade;
 
 class SeoContentGate
 {
     /**
      * Determine if the user can access the SEO tab and edit content on entries and terms.
      */
-    public function editContent(User $user, SeoSet $seoSet): bool
+    public function editContent($user, SeoSet $seoSet): bool
     {
         if (! AdvancedSeo::pro()) {
             return true;

src/Policies/SeoSetPolicy.php

@@ -14,7 +14,7 @@ class SeoSetPolicy
 {
     use HasMultisitePolicy;
 
-    public function before(User $user)
+    public function before($user)
     {
         if (! AdvancedSeo::pro()) {
             return true;
@@ -27,7 +27,7 @@ public function before(User $user)
         }
     }
 
-    public function viewAny(User $user, SeoSetGroup $group): bool
+    public function viewAny($user, SeoSetGroup $group): bool
     {
         $user = UserFacade::fromUser($user);
 
@@ -36,7 +36,7 @@ public function viewAny(User $user, SeoSetGroup $group): bool
         });
     }
 
-    public function edit(User $user, SeoSetLocalization $localization): bool
+    public function edit($user, SeoSetLocalization $localization): bool
     {
         $user = UserFacade::fromUser($user);
 
@@ -54,7 +54,7 @@ public function edit(User $user, SeoSetLocalization $localization): bool
         return $canEditLocalization && $this->canEditStatamicContent($user, $localization->type(), $localization->handle());
     }
 
-    public function configure(User $user, SeoSet $seoSet): bool
+    public function configure($user, SeoSet $seoSet): bool
     {
         $user = UserFacade::fromUser($user);