[Bug] Attempt to send cookie metrics to pushgateway failed

### Search before asking

- [X] I searched in the [issues](https://github.com/apache/pulsar/issues) and found nothing similar.

### Version

java: 1.8.0.162
pulsar: 2.10.5
os: centos7.9

### Minimal reproduce step

Here are the implementation details

```
/usr/bin/curl 192.168.0.93:8100/metrics | /usr/bin/curl --data-binary @- http://192.168.0.69:9091/metrics/job/irest_pulsar/instance/192.168.0.93/hostname/ecs-69711187-002.novalocal

% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 172k 0 172k 0 0 39.8M 0 --:--:-- --:--:-- --:--:-- 42.0M
pushed metrics are invalid or inconsistent with existing metrics: 6 error(s) occurred:
* collected metric "process_cpu_seconds_total" { label:{name:"hostname" value:"ecs-69711187-002.novalocal"} label:{name:"instance" value:"192.168.0.93"} label:{name:"job" value:"irest_pulsar"} untyped:{value:7041.39}} is not a COUNTER
* collected metric "process_resident_memory_bytes" { label:{name:"hostname" value:"ecs-69711187-002.novalocal"} label:{name:"instance" value:"192.168.0.93"} label:{name:"job" value:"irest_pulsar"} untyped:{value:1.602596864e+09}} is not a GAUGE
* collected metric "process_max_fds" { label:{name:"hostname" value:"ecs-69711187-002.novalocal"} label:{name:"instance" value:"192.168.0.93"} label:{name:"job" value:"irest_pulsar"} untyped:{value:65535}} is not a GAUGE
* collected metric "process_open_fds" { label:{name:"hostname" value:"ecs-69711187-002.novalocal"} label:{name:"instance" value:"192.168.0.93"} label:{name:"job" value:"irest_pulsar"} untyped:{value:625}} is not a GAUGE
* collected metric "process_start_time_seconds" { label:{name:"hostname" value:"ecs-69711187-002.novalocal"} label:{name:"instance" value:"192.168.0.93"} label:{name:"job" value:"irest_pulsar"} untyped:{value:1.7084974661e+09}} is not a GAUGE
* collected metric "process_virtual_memory_bytes" { label:{name:"hostname" value:"ecs-69711187-002.novalocal"} label:{name:"instance" value:"192.168.0.93"} label:{name:"job" value:"irest_pulsar"} untyped:{value:1.095387136e+10}} is not a GAUGE
```

### What did you expect to see?

Indicator successfully pushed to pushgateway

### What did you see instead?

as above

### Anything else?

_No response_

### Are you willing to submit a PR?

- [ ] I'm willing to submit a PR!

Start by running the reported curl pipeline and comparing the /metrics output with Pushgateway's metric-type validation. Trace the Pulsar Prometheus metrics endpoint and the registration of the listed process_* metrics; done means the metrics are accepted by Pushgateway without type errors.

Written by the indexing model from the issue text.