[Backport] Fixed product tier pricing pagination issue in admin

Author: dmytro-ch

app/code/Magento/Ui/view/base/web/js/dynamic-rows/dynamic-rows.js

@@ -722,6 +722,8 @@ define([
          * @param {Number} page - current page
          */
         changePage: function (page) {
+            this.clear();
+
             if (page === 1 && !this.recordData().length) {
                 return false;
             }
@@ -763,15 +765,13 @@ define([
          * Change page to next
          */
         nextPage: function () {
-            this.clear();
             this.currentPage(this.currentPage() + 1);
         },
 
         /**
          * Change page to previous
          */
         previousPage: function () {
-            this.clear();
             this.currentPage(this.currentPage() - 1);
         },