[Issue 23337] Wrongly elided postblit/copy ctor for array construction (_d_arrayctor lowering)

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=23337

--- Comment #2 from kinke <kinke at gmx.net> ---
[The latter worked from 2.069 to 2.098, then regressed with v2.099.]

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