Chore: Render avatar url in validate token method (#448)

app/controllers/devise/token_validations_controller.rb

@@ -0,0 +1,10 @@
+class Devise::TokenValidationsController < ::DeviseTokenAuth::TokenValidationsController
+  def validate_token
+    # @resource will have been set by set_user_by_token concern
+    if @resource
+      render 'devise/token.json'
+    else
+      render_validate_token_error
+    end
+  end
+end