🚑 修复背景透明度调整失效问题

Author: Littlefean

app/src/core/render/canvas2d/renderer.tsx

@@ -108,7 +108,7 @@ export namespace Renderer {
    * 仅在导出png时开启
    */
   // eslint-disable-next-line prefer-const
-  export let isRenderBackground = true;
+  export let isRenderBackground = false;
   let isShowBackgroundCartesian = false;
   export let isAlwaysShowDetails = false;
   export let protectingPrivacy = false;

app/src/core/service/dataGenerateService/stageExportEngine/StageExportPng.tsx

@@ -25,7 +25,7 @@ export namespace StageExportPng {
   /**
    * 是否有背景
    */
-  let isHaveBackground = true;
+  let isHaveBackground = false;
   export function setHaveBackground(have: boolean) {
     isHaveBackground = have;
   }

app/src/pages/_fixed_panel/_export_png_panel.tsx

@@ -19,7 +19,7 @@ export default function ExportPNGPanel() {
   const [isRendering, setIsRendering] = useState(false);
   const [current, setCurrent] = useState(0);
   const [total, setTotal] = useState(0);
-  const [isTransparentBackground, setIsTransparentBackground] = useState(false);
+  const [isTransparentBackground, setIsTransparentBackground] = useState(true);
 
   useEffect(() => {
     if (!isExportPngPanelOpen) {