Create distributed table colocation error message is not informative

1. Create a distributed table,
2. Kill one of the workers
3. Create another distributed table

Result
Table creation fails with an error message saying second table can not be colocated with the first one, user did not wanted to colocate the table, just wanted to create a distributed table. We should provide a better message saying what to do here.

Start by reproducing the three-step worker-failure scenario described in the issue and locating the source of the colocation error message. Review the surrounding distributed-table creation path to determine what guidance is available, then verify that the resulting message explains what the user should do when creating the second table.

Written by the indexing model from the issue text.