Fix the bug of "goto input" click does not trigger callback event

Author: huangshuwei

packages/ve-pagination/src/index.jsx

@@ -96,7 +96,7 @@ export default {
                     if (event.keyCode !== 13) return;
 
                     var val = this.$parent.getValidNum(event.target.value);
-                    this.$parent.newPageIndex = val;
+                    this.$parent.jumpPageHandler(val);
                 }
             },
             render(h) {

tests/unit/specs/ve-pagination.spec.js

@@ -286,5 +286,8 @@ describe("vePagination", () => {
         expect(
             wrapper.find(".ve-pagination-li-active.ve-pagination-li").text()
         ).toBe("2");
+
+        expect(wrapper.emitted("on-page-number-change").length).toEqual(1);
+        expect(wrapper.emitted("on-page-number-change")[0]).toEqual([2]);
     });
 });