User story: As an administrator, I want to set the caution level of Automoderator, so that its behaviour reflects my community's comfort level with false positives.

This ticket covers the technical implementation of this configuration and is not concerned with the user-facing interface, which may have different labels and options corresponding to those outlined here.

Name: Threshold
Options: Float values above 0.95
Default: 1

Administrators should be able to configure the threshold above which Automoderator will revert edits. Automoderator should revert any edit which equals or exceeds this value (while respecting the other rules set in T352439).

Any value below 0.95 should be treated as 0.95 - we don't want to allow communities to accidentally set the threshold far too low, resulting in a large number of false positive reverts.

Acceptance criteria

• Automoderator only reverts edits which have a model score equal or exceeding the score set in the threshold configuration.
• Threshold settings below 0.95 are treated as if they are 0.95.