Unable to `LOAD DATA LOCAL INFILE` in DoltSQL shell

I have a dolt sql-server running on port 3307 (`dolt sql-server --port 3307`).

When I try to load a CSV in the DoltSQL shell, I get the following error message:
```
tmp/main*> LOAD DATA LOCAL INFILE '/Users/amx/table1.csv' INTO TABLE table1 FIELDS TERMINATED BY ',' ENCLOSED BY '"' LINES TERMINATED BY '\n' IGNORE 1 ROWS;
LOCAL supported only in sql-server mode
```

No source files or tests are named. Start by reproducing the issue with `dolt sql-server --port 3307`, then run the reported `LOAD DATA LOCAL INFILE` statement in the DoltSQL shell and trace the mode-handling entry point. Done means the command's behavior is corrected or its supported usage is made clear.

Written by the indexing model from the issue text.