Pull request #3264: BI-118754 fix(getMinimumFontSize): 获取最小字号无效

Merge in VISUAL/fineui from ~XAVIER.MENG/fineui:master to master

* commit '6fd7a76da423e9ae345291a7b18d6791a89dd465':
  BI-118754 fix(getMinimumFontSize): 获取最小字号无效

src/core/platform/web/function.js

@@ -140,8 +140,9 @@ BI._.extend(BI, {
     },
 
     getMinimumFontSize: function () {
+        // not work for firefox
         const el = document.createElement('div');
-        el.style.fontSize = "0px";
+        el.style.fontSize = "1px";
         document.body.appendChild(el);
         const size = getComputedStyle(el).fontSize;
         el.remove();