How to add currency symbol in headers parameter of cx-picker

Summary:

In opportunity, we have requirement to add currency symbol to the custom field that we added dynamically as per opportunity currency.

Content (please ensure you mask any confidential information):

In opportunity we have Product panel which by default shows opportunity amount with currency symbol dynamically according to opportunity currency. In our use case we have to show "Total Ext. Net Price" which is custom field in opportunity.

So, I copied existing panel for product and modified headers parameter according to our case value is getting displayed but without currency symbol.

At layout we can handle this by adding cx-currency template to the fields we are adding in panel but at panel level how can we handle this scenario?