Fixes regression bug due to ERA Tablespace workaround

[SandyRogers]

This PR:

• fixes the ability for the mgnify-web Taskfile task to automatically create a text DB fixture.
• the inability to do so was a regression bug, introduced by a workaround needed for the ERA tablespace on ENA's Oracle DB, which recently stopped routing Views automatically to the default tablespace. Unforunately, SQlite doesn't support . in table names, or tablespaces, so our "fake" ENA database can't perfectly match ERA. This adds a workaround for that.