[2.2.0] Checkmk Werk 17165 created: Fix warning on rule creation of "Icon image for..."

Title: Fix warning on rule creation of "Icon image for..." Class: fix Compatible: compat Component: wato Date: 1723726408 Edition: cre Level: 1 Version: 2.2.0p33 If you created a new rule "Icon image for hosts in status GUI" or "Icon image for services in status GUI", a warning like "Unable to read current options of this rule" was shown. The rule could still be created.