Presentment currency symbol in abandoned cart flow

My store default currency is GBP and I also have customers in the US with Shopify Markets managing payments in USD. My abandoned cart flow is showing the cart line items with the correct value numbers but it is using the wrong currency symbol.

For example, the line item price in Shopify is $7.00 but in the Klaviyo email they see it as £7.00. For the event data I see:

$currency_code: GBP

$value: 7

presentment_currency: USD

I am displaying the line items using this code:

{{ item.product.title }}

Quantity: {{ item.quantity|floatformat:0 }} — Total: {% currency_format item.line_price|floatformat:2 %}

Does anyone lknow how to correct this? Thanks.