fix: removed dead code, mapped error from grafana operator to preparation error rather than ignoring it, modified k8sprometheus score to unwrap_or_default() service monitors

harmony/src/modules/monitoring/grafana/helm/helm_grafana.rs

@@ -1,3 +1,4 @@
+use harmony_macros::hurl;
 use non_blank_string_rs::NonBlankString;
 use std::{collections::HashMap, str::FromStr};
 
@@ -20,7 +21,7 @@ pub fn grafana_helm_chart_score(ns: &str, namespace_scope: bool) -> HelmChartSco
         install_only: true,
         repository: Some(HelmRepository::new(
             "grafana".to_string(),
-            url::Url::parse("https://grafana.github.io/helm-charts").unwrap(),
+            hurl!("https://grafana.github.io/helm-charts"),
             true,
         )),
     }