Fix 1:
-------
Using the early receipt printing option leads to a traceback when using the italian fiscal printer.

Steps to reproduce:
-------------------
* Setup the italian fiscal printer for a restaurant
* Enable Early Receipt printing
* Open restaurant
* Open a table, add an item to cart
* Try the early print option
> Observation: Traceback

Why the fix:
------------
Initially the traceback is related to trying to read `decimal_places` out of undefined. The current order doesn't have yet a currency.

To solve this initial issue we can just take the currency of the config if there's none on the order. The pos does not handle multicurrency so the order will always have the same currency as the config anyway.

After solving this part another issue would still happen. If the order was no sent to the kitchen yet. Such orders are not yet synced to the backend and do not have an id of type number. If the order had been send to the display.

This scenario was sending the printer, the data to print and with a successful print we were trying to sync data to the server with
```
await this.data.write("pos.order", [order.id], updateData);
```
which was triggering an error in `orm_services` with `validatePrimitiveList`.
> Invalid ids list: pos.order_4

If we try to reprint AGAIN the bill for some reason, we get another traceback. It's because the nb_print is now 1 and therefore we now try to print with
```
printResult = await this.fiscalPrinter.printContentByNumbers({
    order: order,
});
```
which will try to split undefined here
```
this.receiptNumber = this.props.order.it_fiscal_receipt_number;
const dateParts = this.props.order.it_fiscal_receipt_date.split("/");
```

Those two last issues are solved by not syncing the data to the server when we simply print the bill early.

-------
-------
Fix 2:
-------
Currently the early printing option does not work as desired. The fiscal printer does not print the receipt.

Steps to reproduce:
-------------------
* Setup the italian fiscal printer for a restaurant
* Enable Early Receipt printing
* Open restaurant
* Open a table, add an item to cart
* Try the early print option
> Observation: the printer stops in the middle of printing the receipt

Why the fix:
------------
The early receipt was trying to be printed as a fiscal document. However it cannot be considered as such.

We backport this fix that enables basic receipt printing and alter it to also work with early printing.

Fix being backported: https://github.com/odoo/enterprise/commit/b8fd13b802729ccee080ab14f2958d59f57d0f97

There are a few differences between the early receipt and the basic print, mainly the fact that prices need to be shown on the early receipt.

There are a few differences with the original commit. In the documentation of the printer, `printNormal` uses data and the original commit mixes between `data` and `message` so it is harmonized here.

opw-5387572


Results:
-----------
Basic receipt:
<img width="672" height="835" alt="image" src="https://github.com/user-attachments/assets/3de96523-22db-4a27-adbd-3464802604aa" />

Early receipt:
<img width="658" height="842" alt="image" src="https://github.com/user-attachments/assets/f6b7ab24-e27b-4deb-8d5f-1b0c41bb28f0" />

Forward-Port-Of: odoo/enterprise#107925
Forward-Port-Of: odoo/enterprise#105511