Review LaterRun in 128

LaterRun is now enabled in a few places.

Probably needs disabling within the LaterRun module. Also, LaterRun seems to be used in other places now, so could do with a more thorough review than we could in #41568 (closed).

/cc @pierov ~~since you wrote the original patch.~~

Edited Jul 15, 2024 by henry

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