SQLSTATE[HY000]: General error: 1 table messenger_messages already exists

Nobody has claimed this yet.

After an upgrade from symfony 4.4 to symfony 5.1 with all the doctrine dependencies, and also an remove of `liip/functional-test-bundle` and instead install of `liip/test-fixtures-bundle`

Some dependencies that have been upgraded is

```
doctrine/doctrine-migrations-bundle
doctrine/doctrine-fixtures-bundle
symfony/messenger
```

My tests began to output a lot of `SQLSTATE[HY000]: General error: 1 table messenger_messages already exists` all over the place.

Now for my migrations to not add `messenger_messages` table I have the following doctrine config

```
# config/packages/doctrine.yaml
doctrine:
dbal:
connections:
default:
schema_filter: ~^(?!messenger_messages)~
```

So to fix my `table already exists` I had to add the following to my doctrine test yaml file

```
# config/packages/test/doctrine.yaml

doctrine:
dbal:
default_connection: default
connections:
default:
schema_filter: ~
```

And now my tests are running fine.

Im not actually sure this is a bug in either doctrine or liip, but just wanted to add it somewhere, so it can be googled - because I had no relevant google results coming up.

Start with config/packages/doctrine.yaml and config/packages/test/doctrine.yaml, then reproduce the test failure after the Symfony and Doctrine dependency upgrades. Determine whether the bundle or its documentation should handle the messenger_messages schema conflict, and confirm the tests run without requiring the reported workaround.

Written by the indexing model from the issue text.