Add translation support for script errors (#18786)

Co-authored-by: Bram Kragten <mail@bramkragten.nl>

src/panels/developer-tools/service/developer-tools-service.ts

@@ -423,7 +423,20 @@ class HaPanelDevService extends LitElement {
       }
       forwardHaptic("failure");
       button.actionError();
+
+      let localizedErrorMessage: string | undefined;
+      if (err.translation_domain && err.translation_key) {
+        const lokalize = await this.hass.loadBackendTranslation(
+          "exceptions",
+          err.translation_domain
+        );
+        localizedErrorMessage = lokalize(
+          `component.${err.translation_domain}.exceptions.${err.translation_key}.message`,
+          err.translation_placeholders
+        );
+      }
       this._error =
+        localizedErrorMessage ||
         this.hass.localize("ui.notification_toast.service_call_failed", {
           service: this._serviceData!.service!,
         }) + ` ${err.message}`;