fix(mp): 修复 小程序diff函数，基础数据对比问题 fixed #2696

packages/vue-cli-plugin-uni/packages/mp-vue/dist/mp.runtime.esm.js

@@ -5467,7 +5467,8 @@ function _diff(current, pre, path, result) {
                 var currentType = type(currentValue);
                 var preType = type(preValue);
                 if (currentType != ARRAYTYPE && currentType != OBJECTTYPE) {
-                    if (currentValue != pre[key]) {
+                    // NOTE 此处将 != 修改为 !==。涉及地方太多恐怕测试不到，如果出现数据对比问题，将其修改回来。
+                    if (currentValue !== pre[key]) {
                         setResult(result, (path == '' ? '' : path + ".") + key, currentValue);
                     }
                 } else if (currentType == ARRAYTYPE) {