fix: crash when using Google Translate, close #2121

https://github.com/facebook/react/issues/11538
Static text nodes must be wrapped when they are preceeded by a conditional expression.
This case looks like it cannot be captured using eslint.

apps/renderer/src/modules/entry-content/index.shared.tsx

@@ -302,7 +302,8 @@ const BackTopIndicator: Component = memo(({ className }) => {
           icon2={<CircleProgress percent={readPercent} size={14} strokeWidth={2} />}
           status={readPercent === 0 ? "init" : "done"}
         />
-        {readPercent}%<br />
+        <span>{readPercent}%</span>
+        <br />
       </div>
       <MotionButtonBase
         onClick={() => {