Following the investigations in {T372337}, it is clear the new way of cleaning link recommendation (`GETempLinkRecommendationSwitchTagClearHook`) is helpful to the wikis. We should enable it globally.
This was discussed in `#growth-engine-room` on Slack:
```
Michael: A dangling-records question: If we maybe want to roll-out a 2% version of the Link-Recommendations task to enwiki soon-ish, should we switch GETempLinkRecommendationSwitchTagClearHook for it to true and run the fixLinkRecommendations script for it a bunch of times?
Martin: Good idea, that makes sense. I think it would even make sense to switch it to true by default, I did not notice anything off regarding that switch?
Martin: (I still prefer waiting for EventGate with fixLinkRecommendation, but given this is now merged, we should be able to do that on Monday)
```
==== Scope of task
[ ] Switch `GETempLinkRecommendationSwitchTagClearHook` to true on all wikis
[ ] Remove the temporary `GETempLinkRecommendationSwitchTagClearHook` feature flag if nothing breaks