[BugFix] Fix SDK write failure for non-default tables

[zaorangyang]

What type of PR is this：

• [x] BugFix
• [ ] Feature
• [ ] Enhancement
• [ ] Refactor
• [ ] UT
• [ ] Doc
• [ ] Tool

Which issues of this PR fixes ：

Fixes #

Problem Summary(Required) ：

For the Stream Load SDK, if the table to be written to is a non-default table, the DefaultStreamLoader.send method still requests SR to write data to the default table, causing the stream load job to fail. This PR fixes this issue.

Checklist:

• [ ] I have added test cases for my bug fix or my new feature
• [ ] This pr will affect users' behaviors
• [ ] This pr needs user documentation (for new or modified features or behaviors)
• [ ] I have added documentation for my new feature or new function