Error message for avatar image that's too large. #9204 (#9518)

* Error message for avatar image that's too large. #9204

* Code climate/formatting

* Removed avatar error message

* Moved valid image dimentions check to update service

* removed unnescessary begin block

* code climate formatting

* code climate indent fix

app/services/update_account_service.rb

@@ -12,6 +12,9 @@ class UpdateAccountService < BaseService
       check_links(account)
       process_hashtags(account)
     end
+  rescue Mastodon::DimensionsValidationError => de
+    account.errors.add(:avatar, de.message)
+    false
   end
 
   private