[Issue 19420] [master] TypeTrait semantic fails for non static aggregate members

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=19420

--- Comment #1 from Basile B. <b2.temp at gmx.com> ---
When i think to what AliasSeq does maybe that the semantic for TypeTrait should
always create a tuple and let the aliasSemantic() do its job on this tuple,
without adding any pre-processing...

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