lib: BLOCKED) Add <{BITS}> to the type when Display works in const fn.

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On 2022-05-28 @recmo wrote in 1ec2e50 “Recognize new tags”:

BLOCKED) Add <{BITS}> to the type when Display works in const fn.

    #[must_use]
    #[track_caller]
    pub const fn from_limbs(limbs: [u64; LIMBS]) -> Self {
        Self::assert_valid();
        if BITS > 0 {
            // FEATURE: (BLOCKED) Add `<{BITS}>` to the type when Display works in const fn.
            assert!(
                limbs[Self::LIMBS - 1] <= Self::MASK,
                "Value too large for this Uint"
            );
        }

From src/lib.rs:178