[FIX] sale: Display color tootlip in product configurator

Issue

	- Install "Sales" module
	- Go to settings and activate "Product Configurator" feature
	- Create a product X with mutilple color (variants)
	- Create a quotation
	- Add product X (Product Configurator should open)
	- Hover any color

	Popup with color name does not appear.

Cause

	'title' attribute value is removed.

Solution

	if element have 'value_name' data attribute, set it back as title else set no title.

opw-2438704

closes odoo/odoo#66479

X-original-commit: fc7ef284915641472722a7be06a75b1df3b8ca93
Signed-off-by: bon-odoo <nboulif@users.noreply.github.com>

addons/sale/static/src/js/variant_mixin.js

@@ -342,7 +342,7 @@ var VariantMixin = {
             .find('option, input, label')
             .removeClass('css_not_available')
             .prop('disabled', false)
-            .attr('title', '')
+            .attr('title', function () { return $(this).data('value_name') || ''; })
             .data('excluded-by', '');
 
         // exclusion rules: array of ptav