feat: implement openExternalUrl utility for consistent external link handling

src/app/components/uia-stages/SSOStage.tsx

@@ -1,3 +1,4 @@
+import { openExternalUrl } from '../../utils/tauri';
 import { Box, Button, color, config, Dialog, Header, Icon, IconButton, Icons, Text } from 'folds';
 import React, { useCallback, useEffect, useState } from 'react';
 import { StageComponentProps } from './types';
@@ -20,8 +21,8 @@ export function SSOStage({
   }, [submitAuthDict, session]);
 
   const handleContinue = () => {
-    const w = window.open(ssoRedirectURL, '_blank');
-    setSSOWindow(w ?? undefined);
+    openExternalUrl(ssoRedirectURL);
+    setSSOWindow(undefined);
   };
 
   useEffect(() => {

src/app/components/user-profile/UserChips.tsx

@@ -1,4 +1,5 @@
 import React, { MouseEventHandler, useCallback, useMemo, useState } from 'react';
+import { openExternalUrl } from '../../utils/tauri';
 import { useNavigate } from 'react-router-dom';
 import FocusTrap from 'focus-trap-react';
 import { isKeyHotkey } from 'is-hotkey';
@@ -110,7 +111,7 @@ export function ServerChip({ server }: { server: string }) {
                 size="300"
                 radii="300"
                 onClick={() => {
-                  window.open(`https://${server}`, '_blank');
+                  openExternalUrl(`https://${server}`);
                   close();
                 }}
               >