So I didn’t work this out directly, but I copied the approach from David’s PR to “News Plugin”, which included this entry:
Strangely this entry didn’t seem to help someone who was forced to pin a fork manually?
BUT: I’ve found the commit and it is here: DEV: Convert share-topic modal to new component-based API (#22154) · discourse/discourse@c6cd3af · GitHub
But that’s marked: v3.1.0.beta7 
?!
So I’m assuming here we could add:
< 3.1.0.beta7: a4c3fc6ed3caf8f4aa93b20f44ad14d200794823?