fix: ensure invitation feature is disabled when registrations are not

Signed-off-by: Miguel Nogueira <me@nogueira.codes>

app/Http/Requests/ValidateInviteRequest.php

@@ -0,0 +1,30 @@
+<?php
+
+namespace App\Http\Requests;
+
+use App\Facades\Options;
+use Illuminate\Foundation\Http\FormRequest;
+
+class ValidateInviteRequest extends FormRequest
+{
+    /**
+     * Determine if the user is authorized to make this request.
+     */
+    public function authorize(): bool
+    {
+        return !Options::getOption('enable_registrations');
+    }
+
+    /**
+     * Get the validation rules that apply to the request.
+     *
+     * @return array<string, \Illuminate\Contracts\Validation\ValidationRule|array<mixed>|string>
+     */
+    public function rules(): array
+    {
+        return [
+            'validation_token' => 'required|string',
+            'email' => 'required|email'
+        ];
+    }
+}