Add ipados-device class, move ios-device class to clientside

app/assets/javascripts/discourse/app/instance-initializers/sniff-capabilities.js

@@ -8,5 +8,13 @@ export default {
     } else {
       html.classList.add("no-touch", "discourse-no-touch");
     }
+
+    if (caps.isIpadOS) {
+      html.classList.add("ipados-device");
+    }
+
+    if (caps.isIOS) {
+      html.classList.add("ios-device");
+    }
   },
 };

app/helpers/application_helper.rb

@@ -175,7 +175,6 @@ module ApplicationHelper
     list = []
     list << (mobile_view? ? "mobile-view" : "desktop-view")
     list << (mobile_device? ? "mobile-device" : "not-mobile-device")
-    list << "ios-device" if ios_device?
     list << "rtl" if rtl?
     list << text_size_class
     list << "anon" unless current_user
@@ -446,10 +445,6 @@ module ApplicationHelper
     MobileDetection.mobile_device?(request.user_agent)
   end
 
-  def ios_device?
-    MobileDetection.ios_device?(request.user_agent)
-  end
-
   def customization_disabled?
     request.env[ApplicationController::NO_THEMES]
   end

lib/mobile_detection.rb

@@ -20,10 +20,6 @@ module MobileDetection
     end
   end
 
-  def self.ios_device?(user_agent)
-    user_agent =~ /iPad|iPhone|iPod/
-  end
-
   MODERN_MOBILE_REGEX =
     %r{
     \(.*iPhone\ OS\ 1[5-9].*\)|