resume content flow, instead of closed with errors.

Avoid misunderstanding LLMs about the numbers value

### What problem does this PR solve?

### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)

Fixed code error when mssql returns multiple columns

### What problem does this PR solve?

Update exesql component for agent

### Type of change

- [x] Refactoring

---------

Co-authored-by: liuhua <10215101452@stu.ecun.edu.cn>

Fix some bugs in text2sql.(#4279)(#4281)

### What problem does this PR solve?
- The incorrect results in parsing CSV files of the QA knowledge base in
the text2sql scenario. Process CSV files using the csv library. Decouple
CSV parsing from TXT parsing
- Most llm return results in markdown format ```sql query ```, Fix
execution error caused by LLM output SQLmarkdown format.### Type of
change
- [x] Bug Fix (non-breaking change which fixes an issue)

clone https://github.com/infiniflow/ragflow/pull/4023 
improve the information extraction, most llm return results in markdown
format ````sql ___ query `____ ```

some thing
-  execsql  add connection mssql
- fix bug duckduckgo-search rate limit
- update typo vi res

---------

Co-authored-by: Kevin Hu <kevinhu.sh@gmail.com>

### What problem does this PR solve?
#3978

### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)

### What problem does this PR solve?

Fix errors detected by Ruff

### Type of change

- [x] Refactoring

### What problem does this PR solve?

#2834

### Type of change

- [x] New Feature (non-breaking change which adds functionality)

### What problem does this PR solve?

#2700 

### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)

### What problem does this PR solve?

### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)

### What problem does this PR solve?

Fix exeSQL component 
Update DB Assistant template 
Fix canvas Message window size

### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)

---------

Co-authored-by: Kevin Hu <kevinhu.sh@gmail.com>

### What problem does this PR solve?

### Type of change

- [x] New Feature (non-breaking change which adds functionality)

---------

Co-authored-by: Kevin Hu <kevinhu.sh@gmail.com>

### What problem does this PR solve?

### Type of change

- [x] Refactoring

---------

Co-authored-by: Kevin Hu <kevinhu.sh@gmail.com>

### What problem does this PR solve?

### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)

---------

Co-authored-by: Kevin Hu <kevinhu.sh@gmail.com>

### What problem does this PR solve?

#1965 

### Type of change

- [x] New Feature (non-breaking change which adds functionality)

---------

Co-authored-by: Kevin Hu <kevinhu.sh@gmail.com>