[FIX] website_sale: Remove taxes of fixed comparison price

Steps:
- In the global settings:
	- Activate Comparison Price (group_product_price_comparison)
	- Put Line Subtotals Tax Display to “Tax Included”
- Go to a product (e.g. Customizable Desk)
- Set Compare to Price to a higher price than the sales price
- Set a Customer Tax
- Go to the shop on the website
Issue:
The crossed-out price is not the same in the product list page and in the product detail page.

Cause:
No condition of the application of the tax on base_price.

Similar to: https://github.com/odoo/odoo/pull/113108/commits/8b7595deace98da26ee016ca565776ffd537284c

opw-3199343

closes odoo/odoo#116821

X-original-commit: b58014d87d9e7b9520ec8aff35395ec3d921c36e
Signed-off-by: Victor Feyens (vfe) <vfe@odoo.com>
Signed-off-by: Djoumatchoua Eteil Junior (etdj) <etdj@odoo.com>

addons/website_sale/models/product_template.py

@@ -203,10 +203,12 @@ class ProductTemplate(models.Model):
                 base_price = base_sales_prices[template.id]
 
             if base_price and base_price != price_reduce:
-                base_price = self.env['account.tax']._fix_tax_included_price_company(
-                    base_price, product_taxes, taxes, self.env.company)
-                base_price = taxes.compute_all(base_price, currency, 1, template, partner_sudo)[
-                    tax_display]
+                if not template.compare_list_price:
+                    # Compare_list_price are never tax included
+                    base_price = self.env['account.tax']._fix_tax_included_price_company(
+                        base_price, product_taxes, taxes, self.env.company)
+                    base_price = taxes.compute_all(base_price, currency, 1, template, partner_sudo)[
+                        tax_display]
                 template_price_vals['base_price'] = base_price
                 if base_price > price_reduce:
                     base_price = self.env['account.tax']._fix_tax_included_price_company(