Optimize ProxyStartup exception printing

[weihubeats]

#6361

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 0% with 1 line in your changes missing coverage. Please review.

Project coverage is 42.99%. Comparing base (e599187) to head (e4a30c9).
Report is 715 commits behind head on develop.

Files with missing lines	Patch %	Lines
...n/java/org/apache/rocketmq/proxy/ProxyStartup.java	0.00%	1 Missing ⚠️

Additional details and impacted files

@@              Coverage Diff              @@
##             develop    #6362      +/-   ##
=============================================
- Coverage      43.10%   42.99%   -0.12%     
- Complexity      8861     8896      +35     
=============================================
  Files           1094     1103       +9     
  Lines          77283    77839     +556     
  Branches       10085    10134      +49     
=============================================
+ Hits           33313    33465     +152     
- Misses         39804    40180     +376     
- Partials        4166     4194      +28     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[weihubeats]

@Oliverwqcwrw Can you look at this pr?

[Oliverwqcwrw]

@Oliverwqcwrw Can you look at this pr?

I checked the latest code and found that it was fixed by #6375

Thank you all the same for your contribution to the community

[weihubeats]

Okay, I'm going to close this pr