As part of working on {T370802}, I discovered that the `refreshLinkRecommendations.php` script does not run when Add Link is disabled via CommunityConfiguration. This is incorrect – the refreshing script is a part of the backend, and as long as the backend flag (`GENewcomerTasksLinkRecommendationsEnabled`) is enabled, the script should continue running (the CommunityConfiguration flag should affect the frontend only, not the backend). Doing so will enable us to enable Add Link silently, in a way that needs only a community Administrator to enable Add Link via CommunityConfiguration.
Since https://en.wikipedia.org/w/index.php?title=MediaWiki:GrowthExperimentsSuggestedEdits.json&diff=prev&oldid=1237412036, `refreshLinkRecommendations.php` results in the following at en.wikipedia:
```
[urbanecm@mwmaint1002 ~]$ mwscript extensions/GrowthExperiments/maintenance/refreshLinkRecommendations.php --wiki=enwiki --verbose
'link-recommendation' is not a link recommendation task type
[urbanecm@mwmaint1002 ~]$
```
Interestingly, `revalidateLinkRecommendations.php` works just fine, even though Add Link is disabled via CommunityConfiguration, see Txxx.