[FIX] account: reconciliation widget tax included

Before this commit, when reconciling with a tax included line,
the journal entries were wrong as the amount taken into account was the one that was **already** computed with tax
e.g:
TAX: 20%
amount of the line (tax included): 1
tax amount: 0.17
base amount: 0.83

what was sent to the server was the basea amount, and since python re-computes the taxes
it reapplied tax included 20% on 0.83 instead of 1

After this commit, we send the right amount to the server,
at the small price of semantics change in the meaning of "amount"

OPW 783933

closes #21189

addons/account/models/account.py

@@ -779,6 +779,7 @@ class AccountTax(models.Model):
                 'account_id': tax.account_id.id,
                 'refund_account_id': tax.refund_account_id.id,
                 'analytic': tax.analytic,
+                'price_include': tax.price_include,
             })
 
         return {

addons/account/static/src/js/reconciliation/reconciliation_model.js

@@ -770,6 +770,8 @@ var StatementModel = BasicModel.extend({
                                 '__focus': false
                             });
 
+                            prop.computed_with_tax = tax.price_include
+                            prop.tax_amount = tax.amount
                             prop.amount = tax.base;
                             prop.amount_str = field_utils.format.monetary(Math.abs(prop.amount), {}, formatOptions);
                             prop.invalid = !self._isValid(prop);
@@ -1040,7 +1042,8 @@ var StatementModel = BasicModel.extend({
      * @returns {object}
      */
     _formatToProcessReconciliation: function (line, prop) {
-        var amount = -prop.amount;
+        // Do not forward port in master. @CSN will change this
+        var amount = prop.computed_with_tax && -prop.base_amount || -prop.amount;
         if (prop.partial_reconcile === true) {
             amount = -line.st_line.amount;
         }
@@ -1048,6 +1051,10 @@ var StatementModel = BasicModel.extend({
             name : prop.label,
             debit : amount > 0 ? amount : 0,
             credit : amount < 0 ? -amount : 0,
+            // This one isn't usefull for the server,
+            // But since we need to change the amount (and thus its semantics) into base_amount
+            // It might be useful to have a trace in the RPC for debugging purposes
+            computed_with_tax: prop.computed_with_tax,
         };
         if (!isNaN(prop.id)) {
             result.counterpart_aml_id = prop.id;