[FIX] payment: use currency precision when comparing amounts in Payment Link wizard

In Sales, in Payment Link generation wizard, when entering manually the total of the quotation
as Amount, it can happen that the Validation Error asking to set an Amount smaller than the total
is triggered.

opw-2287794

closes odoo/odoo#54278

Signed-off-by: Nicolas Martinelli (nim) <nim@odoo.com>

addons/payment/wizards/payment_link_wizard.py

@@ -7,7 +7,7 @@ from werkzeug import urls
 
 from odoo import api, fields, models, _
 from odoo.exceptions import ValidationError
-from odoo.tools import ustr, consteq
+from odoo.tools import ustr, consteq, float_compare
 
 
 class PaymentLinkWizard(models.TransientModel):
@@ -46,7 +46,7 @@ class PaymentLinkWizard(models.TransientModel):
 
     @api.onchange('amount', 'description')
     def _onchange_amount(self):
-        if self.amount_max < self.amount:
+        if float_compare(self.amount_max, self.amount, precision_rounding=self.currency_id.rounding or 0.01) == -1:
             raise ValidationError(_("Please set an amount smaller than %s.") % (self.amount_max))
         if self.amount <= 0:
             raise ValidationError(_("The value of the payment amount must be positive."))