[AI assisted] MM-62755: Refactor scanning to map to a util (#30780)

With some neat generics, I was able to refactor
the scanning to a util function. I used it to
refactor 3 places and also removed an unnecessary method.

Claude was quite good here.

https://mattermost.atlassian.net/browse/MM-62755
```release-note
NONE
```

.gitignore

@@ -160,4 +160,7 @@ docker-compose.override.yaml
 .aider*
 .env
 
+
+**/CLAUDE.local.md
 CLAUDE.md
+