Fix locking rows when partitioning with a lock timeout

[cbisnett]

When running partition_data_proc() or partition_data_time() with a non-zero value for p_lock_wait, the query generated to lock the rows for updating incorrectly includes the table name where it should be including p_partition_expression. This PR fixes that issue by indexing the correct argument to format.

I don't have a setup to test this, but I ran into this in a production environment while trying to understand why moving data from the default partition didn't appear to be making any progress. I also didn't write any tests because I wasn't sure what minimum level of SQL would be necessary for testing this. Hopefully that's not an issue for getting this merged.

Ultimately this isn't blocking my progress, but I figured I would make this quick update. Let me know if you want me to make any updates to the CHANGELOG or any other files.

[keithf4]

Thanks for this! Looks good on initial review and not sure it needs extra testing. Will take a closer look when I get a chance.