Update naming of email statement scheduler

(cherry picked from commit 2f3cee2fc2)

app/DataMapper/Schedule/ClientStatement.php

@@ -22,7 +22,7 @@ class ClientStatement
      * 
      * @var string
      */
-    public string $template = 'client_statement';
+    public string $template = 'email_statement';
 
     /**
      * An array of clients hashed_ids

app/Services/Scheduler/SchedulerService.php

@@ -39,8 +39,8 @@ class SchedulerService
         $this->{$this->scheduler->template}();
     }
 
-    private function client_statement()
-    {   
+    private function email_statement()
+    {
         $query = Client::query()
                         ->where('company_id', $this->scheduler->company_id)
                         ->where('is_deleted',0);