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9af50a9c47
fixes #25123; fixes #11862
follow up https://github.com/nim-lang/Nim/pull/24442
ref https://github.com/nim-lang/Nim/pull/24441
> To fix this, fields from inactive branches are now detected in
semmacrosanity.annotateType (called in fixupTypeAfterEval) and marked to
prevent the codegen of their assignments. In
https://github.com/nim-lang/Nim/pull/24441 these fields were excluded
from the resulting node, but this causes issues when the node is
directly supposed to go back into the VM, for example as const values. I
don't know if this is the only case where this happens, so I wasn't sure
about how to keep that implementation working.
Object variants fields coming from inactive branches from VM are now
flagged `nfPreventCg`. We can ignore them, as done by the C backends.
(cherry picked from commit 5abd21dfa5)