[commons][httpclient] optimize bml client connection pool parameters

[v-kkhuang]

What is the purpose of the change

This PR optimizes the BML client connection pool parameters to improve connection management and performance.

Related issues/PRs

Related issues: none
Related pr:none

Brief change log

• Optimize BML client connection pool parameters
• Update AbstractHttpClient configuration

Checklist

• I have read the Contributing Guidelines on pull requests.
• I have explained the need for this PR and the problem it solves
• I have explained the changes or the new features added to this PR
• I have added tests corresponding to this change
• I have updated the documentation to reflect this change
• I have verified that this change is backward compatible (If not, please discuss on the Linkis mailing list first)
• If this is a code change: I have written unit tests to fully verify the new behavior.