add back test for stable-const-can-only-call-stable-const#129553

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bors merged 1 commit intorust-lang:masterfrom

RalfJung:const-stability

Aug 26, 2024

Commits on Aug 25, 2024

tweak rustc_allow_const_fn_unstable hint, and add back test for stable-const-can-only-call-stable-const
RalfJung
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