refactor(helper): update desktop environment checks to include XFCE

Author: Ayideyia

frontend/src/utils/helper.ts

@@ -262,7 +262,7 @@ async function setLinuxSystemProxy(
         .join(','),
     ])
     await Promise.all([p1, p2, p3, p4, p5])
-  } else if (desktop.includes('GNOME')) {
+  } else if (['GNOME', 'XFCE'].includes(desktop)) {
     const p1 = ignoredError(Exec, 'gsettings', [
       'set',
       'org.gnome.system.proxy',
@@ -411,7 +411,7 @@ export const GetSystemProxy = async () => {
             return socks.replace(' ', ':')
           }
         }
-      } else if (desktop.includes('GNOME')) {
+      } else if (['GNOME', 'XFCE'].includes(desktop)) {
         const out = await Exec('gsettings', ['get', 'org.gnome.system.proxy', 'mode'])
         if (out.includes('none')) {
           return ''
@@ -483,7 +483,7 @@ export const GetSystemProxyBypass = async () => {
         .split(',')
         .map((v) => v.trim())
         .join(';')
-    } else if (desktop.includes('GNOME')) {
+    } else if (['GNOME', 'XFCE'].includes(desktop)) {
       const out = await ignoredError(Exec, 'gsettings', [
         'get',
         'org.gnome.system.proxy',