Currently, when buying a product with a division tax using price included
the base price used to compute the total is not correct and will show a wrong total value.

Steps to reproduce:
-------------------
* Go into the **Accounting** app
* Under **Configuration** select **Taxes**
* Create a new Tax
  * Tax Computation: `Percentage of Price Tax Included`
  * Amount 10%
  * Advenced Options > Included in price: `True`
* Go to the **Point of sale** App
* Create a new product.
  * Price: 200
  * Tax: the one just created
* Open shop session
* Create an order with the new product and pay it
> Observation: On the receipt, on the tax details, we can see: Tax: 10%, Amount: 20, Base: 200, Total: 220. This is not correct, the client paid 200 as tax is included in price.

Why the fix:
------------
Currently the Base value on the receipt is given `taxValues.base`. The same quantity is also used for the computation of the Total shown.

https://github.com/odoo/odoo/blob/49cecec35421cc36258f900d99c1040596601167/addons/point_of_sale/static/src/app/screens/receipt_screen/receipt/order_receipt.xml#L75-L76

However, if we look where the `taxValues` come from we see that they correspond to `tax_details` in `export_for_printing`.
https://github.com/odoo/odoo/blob/49cecec35421cc36258f900d99c1040596601167/addons/point_of_sale/static/src/app/store/models.js#L1314

When checking the function `get_tax_details` we realize that `taxValues.base` actually refers to the `display_base`
https://github.com/odoo/odoo/blob/49cecec35421cc36258f900d99c1040596601167/addons/point_of_sale/static/src/app/store/models.js#L2228

As disucssed with LAS, here is how the values on the receipt should be computed:
```
Amount = amount = 20
Base = display_base = 200
Total = base + amount = 180 + 20
```

Technically, prior to the fix, here is how the value shown are computed:
```
Amount = amount = 20
Base = display_base = 200
Total = display_base + amount = 180 + 20
```

This computation is problematic only in the setting explained earlier as this is the only one which will have a different value for `base` and `display_base`:
https://github.com/odoo/odoo/blob/b8baa83e575a36dd539c9fda10d5ffbe3ef01183/addons/account/static/src/helpers/account_tax.js#L408-L411

Why do we write
```<span t-esc="props.formatCurrency(taxValues.display_base || taxValues.base, false)" />```
instead of just
```<span t-esc="props.formatCurrency(taxValues.display_base, false)" />``` with the changes currently applied in `get_Tax_details`?

Well, when using the kiosk, information about the `display_base` does not exist in `_compute_tax_details`:
https://github.com/odoo/odoo/blob/b8baa83e575a36dd539c9fda10d5ffbe3ef01183/addons/pos_self_order/models/pos_order.py#L41-L61

Thus we avoid an error when using the function `export_for_printing` by using `taxValues.base` as there is no `taxValues.display_base` provided.

This is currently the only other time where the function `export_for_printing` sets the value sent for `tax_details`.

opw-4032366