Data fixes: Set AR reminder to false for migrated corps

**Note: need approval to do this from business + home team before we can proceed with this work**

Corps already migrated as a part of EA and Group 1 batches where the AR reminder flag is true are still receiving AR reminder emails even if the corp has been frozen.

We will need to apply a data fix to ensure that all AR reminder flags for these businesses are set to false.

Future migrations will handle this scenario via #30922

**Tasks**
- [ ] Write COLIN update sql script to update all migrated corps to have AR reminder flag of false
- [ ] Run script in prod after testing in dev/test
- [ ] Create appropriate migration tracking entries to serve as audit record that AR reminder flag was set to false in COLIN

Start by locating the COLIN update SQL conventions and migration-tracking entry points, then identify migrated EA and Group 1 corps whose AR reminder flag is true. Test the data fix in dev/test before production execution; done means all qualifying flags are false and audit entries exist.

Written by the indexing model from the issue text.