DEV: Avoid initializing max_image_size_kb in initializer (#28209)

Since this might initialize to the default db's values
rather than that of the site.

app/jobs/regular/pull_hotlinked_images.rb

@@ -5,7 +5,6 @@ module Jobs
     sidekiq_options queue: "low"
 
     def initialize
-      @max_size = SiteSetting.max_image_size_kb.kilobytes
     end
 
     def execute(args)
@@ -101,7 +100,7 @@ module Jobs
         downloaded =
           FileHelper.download(
             src,
-            max_file_size: @max_size,
+            max_file_size: SiteSetting.max_image_size_kb.kilobytes,
             retain_on_max_file_size_exceeded: true,
             tmp_file_name: "discourse-hotlinked",
             follow_redirect: true,
@@ -137,7 +136,9 @@ module Jobs
 
       hotlinked = download(src)
       raise ImageBrokenError if !hotlinked
-      raise ImageTooLargeError if File.size(hotlinked.path) > @max_size
+      if File.size(hotlinked.path) > SiteSetting.max_image_size_kb.kilobytes
+        raise ImageTooLargeError
+      end
 
       filename = File.basename(URI.parse(src).path)
       filename << File.extname(hotlinked.path) unless filename["."]