fix: sync company_users to sandbox so invited users appear in IAM list

The IAM user list is queried against the sandbox database when the console
is in sandbox mode. CompanyUser rows (created by acceptCompanyInvite) were
only written to production, so invited users who had accepted were invisible
to the UserFilter::queryForInternal() whereHas('companyUsers') check.

Add CompanyUser to the SyncSandbox syncable models list so that membership
rows are mirrored to sandbox on every hourly sync. Also add company_users
to the --truncate block for consistency.

Author: Ronald A Richardson

src/Console/Commands/SyncSandbox.php

@@ -56,10 +56,13 @@ public function handle()
             DB::connection('sandbox')
                 ->table('api_credentials')
                 ->truncate();
+            DB::connection('sandbox')
+                ->table('company_users')
+                ->truncate();
         }
 
         // Models that need to be synced from Production to Sandbox
-        $syncable = [\Fleetbase\Models\User::class, \Fleetbase\Models\Company::class, \Fleetbase\Models\ApiCredential::class];
+        $syncable = [\Fleetbase\Models\User::class, \Fleetbase\Models\Company::class, \Fleetbase\Models\CompanyUser::class, \Fleetbase\Models\ApiCredential::class];
 
         // Sync each syncable data model
         foreach ($syncable as $model) {