Changes to HIE File due to ApplicativeDo going via HsExpansions

[Ingle, Apoorv N]

Dear ghc-devs,

For past few months I’ve been working on Rebindable Syntax<https://gitlab.haskell.org/ghc/ghc/-/wikis/Rebindable-syntax>, specifically on expanding ApplicativeDo (#24406, MR !12066<https://gitlab.haskell.org/ghc/ghc/-/merge_requests/12066>) statements before type checking.
I noticed that there is a failing test case related to HIE files (T23540). I have been unsuccessful in debugging why this happens and/or if this has any effect on the users of HIE files.

Can anyone who has experience in this area be able to take a look and guide me?

Thanks!
Apoorv
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