fix(ruby): Fix before_send for rails (#12638)

Author: sl0thentr0py

platform-includes/configuration/before-send/ruby.rails.mdx

@@ -9,8 +9,25 @@ Sentry.init do |config|
   filter = ActiveSupport::ParameterFilter.new(Rails.application.config.filter_parameters)
   # for Rails 5
   filter = ActionDispatch::Http::ParameterFilter.new(Rails.application.config.filter_parameters)
-  config.before_send = lambda do |event, hint|
-    filter.filter(event.to_hash)
+
+  config.before_send = lambda do |event, _hint|
+    # Sanitize extra data
+    if event.extra
+      event.extra = filter.filter(event.extra)
+    end
+
+    # Sanitize user data
+    if event.user
+      event.user = filter.filter(event.user)
+    end
+
+    # Sanitize context data (if present)
+    if event.contexts
+      event.contexts = filter.filter(event.contexts)
+    end
+
+    # Return the sanitized event object
+    event
   end
 end
 ```