fix(core): change server url of stable to insider (#4902)

packages/frontend/core/.webpack/runtime-config.ts

@@ -33,7 +33,7 @@ export function getRuntimeConfig(buildFlags: BuildFlags): RuntimeConfig {
       enableCaptcha: true,
       enableEnhanceShareMode: false,
       enablePayment: true,
-      serverUrlPrefix: 'https://app.affine.pro',
+      serverUrlPrefix: 'https://insider.affine.pro', // Let insider be stable environment temporarily.
       editorFlags,
       appVersion: packageJson.version,
       editorVersion: packageJson.dependencies['@blocksuite/editor'],