Fix erroneous imports

[RazvanN7]

This currently blocks : dlang/dmd#7760

[dlang-bot]

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[wilzbach]

We can even remove mixinAll + staticIota entirely -> #6049

[andralex]

Will force merge in the interest of time.

[wilzbach]

Will force merge in the interest of time.

While I like the enthusiasm and action, I think it would be best of force merge is only used if absolutely necessary, a criteria not fulfilled by this PR:

1. It would have been merged in ~20 mins anyways:

2. Fix Issue 17630 - selective imports find symbols in private imports o… dmd#7760 needs to be changed to emit deprecations anyways