[Issue 23306] @disable new() ought not disable `scope A = new A`

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=23306

--- Comment #2 from Adam D. Ruppe <destructionator at gmail.com> ---
It has been there since the beginning. The spec PR got stalled and closed
though https://github.com/dlang/dlang.org/pull/2846/files

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