refactor(site): give default error message when description is missing (#7846)

site/src/api/errors.ts

@@ -90,5 +90,5 @@ export const getErrorDetail = (
   isApiError(error)
     ? error.response.data.detail
     : error instanceof Error
-    ? error.stack
+    ? `Please check the developer console for more details.`
     : null

site/src/components/Alert/Alert.tsx

@@ -27,6 +27,7 @@ export const Alert: FC<AlertProps> = ({
     <Collapse in={open}>
       <MuiAlert
         {...alertProps}
+        sx={{ textAlign: "left", ...alertProps.sx }}
         severity={severity}
         action={
           <>