Fix results qty accuracy for slider-based filters

Range-slider has a bug with expected results counter. This leads to displaying wrong quantity of expected results. For example when I have filtered an attribute to values between 70 and 80 (my_attribute=70-80) this method will return 70-79.9999... instead of 70-80. This contribution will will fix accuracy.

src/module-elasticsuite-catalog/view/frontend/web/js/range-slider-widget.js

@@ -109,7 +109,7 @@ define(["jquery", 'Magento_Catalog/js/price-utils', 'mage/template', "jquery/ui"
 
         _getItemCount : function() {
             var from = this.from, to = this.to, intervals = this.intervals;
-            var count = intervals.map(function(item) {return item.value >= from && item.value < to ? item.count : 0;})
+            var count = intervals.map(function(item) {return item.value >= from && item.value <= to ? item.count : 0;})
                                  .reduce(function(a,b) {return a + b;});
             return count;
         },