Fix build error due to core::intrinsics::catch_unwind return type change

[taiki-e]

The return type of core::intrinsics::catch_unwind has been changed in nightly-2026-05-30 by rust-lang/rust#156867.

error[E0308]: mismatched types
  --> /home/runner/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/unwinding-0.2.8/src/panicking.rs:42:95
   |
42 |         return if core::intrinsics::catch_unwind(do_call::<F, R>, data_ptr, do_catch::<E>) == 0 {
   |                   ------------------------------------------------------------------------    ^ expected `bool`, found integer
   |                   |
   |                   expected because this is `bool`

[nbdd0121]

Thanks!