agpl-3.0_and_other-copyleft_1.RULE should use agpl-generic-additional-terms instead of other-copyleft

### Description

https://github.com/aboutcode-org/scancode-toolkit/blob/develop/src/licensedcode/data/rules/agpl-3.0_and_other-copyleft_1.RULE

has a reference to section 7b of AGPL. There is a generic catch all for these, namely:

https://github.com/aboutcode-org/scancode-toolkit/blob/develop/src/licensedcode/data/licenses/agpl-generic-additional-terms.LICENSE

```
notes: this is a generic entry for rare one-off AGPL extra license terms. These are typically
additional terms under section 7 of the AGPL-3.0
```

The `agpl-3.0_and_other-copyleft_1.RULE` rule instead uses `other-copyleft`:

```
license_expression: agpl-3.0 AND other-copyleft
```