Yii2 backticks cause error in activerecord query for JSON field

The following SQL query works fine:

mysql> SELECT `id`, `created`, `type`, `saved`->>"$.total" AS `total` FROM `invoices` LIMIT 20;

The saved field is in JSON datatype.
However, when I try to use activerecord query for Gridview widget’s search model:

$query = Invoices::find()->select(['id','created','type','`saved`->>"$.total" AS total']);

the generated SQL statement is going to be faulty due to adding backticks surrounding the JSON key total

SELECT `id`, `created`, `type`, `saved`->>"$.`total"` AS `total` FROM `invoices` LIMIT 20

I have tried several formats for saved fields like:

$query = Invoices::find()->select(['id','created','type','saved->>"$.total" AS total']);
//
mysql> SELECT `id`, `created`, `type`, `saved->>"$`.`total"` AS `total` FROM `invoices` LIMIT 20 
// Unknown column error

 $query = Invoices::find()->select(['id','created','type','`saved`->>`"$.total`" AS total']);

mysql> SELECT `id`, `created`, `type`, `saved`->>`"$.total`" AS `total` FROM `invoices` LIMIT 20
//Syntax error or access violation

I could not able to manage how to let activerecord query to deliver correct SQL statement?!