Enable Layout/DefEndAlignment cop

Follow-up rails#46188

- After reverting the merge commit via rails#46188

```
$ git revert -m 1 4328d0e
[enable_layout_def_end_alignment 8445594965] Revert "Merge pull request rails#46188 from yahonda/follow_up_45081"
 1 file changed, 1 insertion(+), 1 deletion(-)
$ bundle exec rubocop
Inspecting 3041 files
... snip ...
Offenses:

activerecord/test/cases/query_logs_formatter_test.rb:10:5: W: [Correctable] Layout/DefEndAlignment: end at 10, 4 is not aligned with def at 6, 2.
    end
    ^^^

3041 files inspected, 1 offense detected, 1 offense auto-correctable
$
```

Author: yahonda

.rubocop.yml

@@ -69,6 +69,9 @@ Layout/ClosingParenthesisIndentation:
 Layout/CommentIndentation:
   Enabled: true
 
+Layout/DefEndAlignment:
+  Enabled: true
+
 Layout/ElseAlignment:
   Enabled: true