Make rollback more informative

[ka8725]

When the gem automatically rolls back, it's unclear why it was rolled back. Show some information in the output.

For example, this is a migration that was tried to be rolled back on running rails db:migrate:

== 20240208135613 AddNotNullConstraintToCategoryIdInProjects: migrating =======
-- change_column_null(:projects, :category_id, false)
   -> 0.0422s
== 20240208135613 AddNotNullConstraintToCategoryIdInProjects: migrated (0.0423s)

== 20240212121941 CreateQueSchema: reverting ==================================
rails aborted!
StandardError: An error has occurred, this and all later migrations canceled:

uninitialized constant CreateQueSchema::Que

    Que.migrate!(version: 0)
    ^^^
Did you mean?  Queue
~/tmp/migrated/20240212121941_create_que_schema.rb:11:in `down'

Caused by:
NameError: uninitialized constant CreateQueSchema::Que

    Que.migrate!(version: 0)
    ^^^
Did you mean?  Queue
~/tmp/migrated/20240212121941_create_que_schema.rb:11:in `down'
Tasks: TOP => db:_dump => db:rollback_branches
(See full trace by running task with --trace)

Note that it needs to be clarified why it was tried to roll it back. Add some info like: actual_db_schema rolls back this migration.

Also, it should not stop the migration on error raised, suppress it, show the error in the output, and move on.