Fix reindexing bug when statement_timeout set
What does this MR do?
The disable_statement_timeout helper is a migration helper with a couple branches. If the statement timeout isn't set at all, it does nothing. This has been the case in dev and CI - until this change, where we configure a statement timeout for those envs.
This also adds a non-mocked spec to test reindexing. In combination, this surfaces the problem described in #251084 (closed) in CI.
Plus, we then fix the bug by renaming methods.
Thinking this doesn't warrant a changelog entry - the rake task has just been added without advertising it in documentation (yet).
Does this MR meet the acceptance criteria?
Conformity
Edited by Andreas Brandl