[Issue 19401] Fix bug in core.internal.traits.hasElaborateDestructor & hasElaborateCopyConstructor for struct with static array alias & for nested structs/unions

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=19401

github-bugzilla at puremagic.com changed:

           What    |Removed                     |Added
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             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED

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