62cad970e8
Pretty print pattern type values with transmute if they don't satisfy their pattern
Instead of printing `0_u32 is 1..`, we now print the default fallback rendering that we also use for invalid bools, chars, ...: `{transmute(0x00000000): (u32) is 1..=}`.
These cases can occur in mir dumps when const prop propagates a constant across a safety check that would prevent the actually UB value from existing. That's fine though, as it's dead code and we always need to allow UB in dead code.
follow-up to https://github.com/rust-lang/rust/pull/136176
cc ``@compiler-errors`` ``@scottmcm``
r? ``@RalfJung`` because of the interpreter changes
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