fix(metrics): Disallow wildcard in search (#69644)

- closes https://github.com/getsentry/sentry/issues/69387

static/app/views/metrics/metricSearchBar.tsx

@@ -181,6 +181,7 @@ export function MetricSearchBar({
       placeholder={t('Filter by tags')}
       query={query}
       savedSearchType={SavedSearchType.METRIC}
+      disallowWildcard
       {...searchConfig}
       {...props}
     />