Fix Issue 24285 - Cannot swap a std.typecons.Tuple

[ntrel]

Avoid CTFE unsafe cast by swapping elements of tupleof.

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Testing this PR locally

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[schveiguy]

this needs effort to make it pass CI. It should not be automerged by accident. Should be reviewed after being fixed.

[thewilsonator]

Please retitle the commit message "Fix bugzilla issue 24285 - ..."

[LightBender]

@ntrel typecons is coming up for Phobos 3. Is there any chance we can get this merged soon so that we don't have to duplicate this fix?