chore: adjust port name to number port (#7804)

[sophon-zt]

The capture execution process of prometheus is as follows:

1. Obtain Endpoints and Generate Service List:

  for ip in addresses
    for port in ports; 
      services = append(services, ip:port)

2. Address Conversion Based on Relabeling Strategy:

 - source_labels: [__address__, __meta_kubernetes_service_annotation_monitor_kubeblocks_io_port] 
   action: replace target_label: __address__ 
   regex: (.+?)(?::\d+)?;(\d+) 
   replacement: $1:$2 

3. Deduplicate Services After Transformation

If the relabeling step fails, it will be bypassed, causing the deduplication logic to be invalid, and as a result, all ports will be scraped.

[codecov]

Codecov Report

Attention: Patch coverage is 78.26087% with 5 lines in your changes missing coverage. Please review.

Project coverage is 64.93%. Comparing base (0ceeaa6) to head (c9d0e34).
Report is 3 commits behind head on main.

Files	Patch %	Lines
pkg/common/monitor.go	78.26%	4 Missing and 1 partial ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #7825   +/-   ##
=======================================
  Coverage   64.92%   64.93%           
=======================================
  Files         345      345           
  Lines       42942    42959   +17     
=======================================
+ Hits        27879    27894   +15     
- Misses      12619    12625    +6     
+ Partials     2444     2440    -4     

Flag	Coverage Δ
unittests	64.93% <78.26%> (+<0.01%)	⬆️

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[sophon-zt]

/cherry-pick release-0.9

[github-actions]

🤖 says: cherry pick action finished successfully 🎉!
See: https://github.com/apecloud/kubeblocks/actions/runs/10001887095