Rollup of 10 pull requests#156150

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JonathanBrouwer wants to merge 27 commits intorust-lang:mainfrom

JonathanBrouwer:rollup-4mvqynT

Commits on Apr 20, 2026

docs(unstable-book): Document const generics features
popzxc
committed
Update unstable feature descriptions (min_generic_const_args, generic_const_exprs)
popzxc
committed
Change generic_const_args feature from unstable to incomplete
popzxc
committed

Commits on Apr 23, 2026

Do not use `const { }` blocks for GCI

popzxc
and
fmease
committed

Commits on Apr 26, 2026

Revert documentation changes from 08bd077
bushrat011899
committed

Commits on Apr 27, 2026

Remove unnecessary `get_unchecked`
ChrisDenton
committed

Commits on May 1, 2026

Added std library support for WALI command-line arguments.
arjunr2
committed

Commits on May 3, 2026

Relax `T: Sized` bound on `try_as_dyn` / `try_as_dyn_mut`
aobatact
committed

Commits on May 4, 2026