feat: update OTEL Node.js metrics dashboard (#199353)

## Summary

Update the current metrics dashboard for Node.js services that are
instrumented using OTEL SDK or Elastic's distribution.

The current dashboard had some issues:
- it was using a view that is not available in latest deployments.
- it was showing labels instead of OTEL native fields

New dashboard is fixing this:
- using `metrics-*` indices
- using OTEL native fields
- and also adding new panels for `nodejs.*` metrics
([ref](e0e93bad39/model/nodejs/metrics.yaml))

x-pack/plugins/observability_solution/apm/public/components/app/metrics/static_dashboard/dashboards/dashboard_catalog.ts

@@ -8,6 +8,7 @@
 export const AGENT_NAME_DASHBOARD_FILE_MAPPING: Record<string, string> = {
   nodejs: 'nodejs',
   'opentelemetry/nodejs': 'opentelemetry_nodejs',
+  'opentelemetry/nodejs/elastic': 'opentelemetry_nodejs',
   java: 'java',
   'opentelemetry/java': 'opentelemetry_java',
   'opentelemetry/java/opentelemetry-java-instrumentation': 'opentelemetry_java',