null metricdata in request monitor graph

[zdyj3170101136]

Describe the bug
only service request rate graph not have data in monitor page.

To Reproduce
Steps to reproduce the behavior:

1. run jaeger/docker-compose/monitor/docker-compose.yml

Expected behavior
service request graph show data in monitor page.
just like other graph.

Screenshots

Version (please complete the following information):

• OS: linux
• Jaeger ui version: v1.22.0
• Deployment: Docker

Additional context
i think the problem is the null metricdata in https://github.com/jaegertracing/jaeger-ui/blob/main/packages/jaeger-ui/src/components/Monitor/ServicesView/index.tsx#L351.

after change it from
null
to

metrics.serviceMetrics ? metrics.serviceMetrics.service_call_rate : null

everything is well.

[nofar9792]

Hi,
i'm going to fix it