tor-error: backtrace captured by `BugRepr` should be formatted using `Display` rather than `Debug`

When you log a tor_error::Bug (for example created through tor_error::internal!), the backtrace is logged with its debug representation.

For example:

error!("{}", tor_error::internal!("foo").report());

outputs:

2024-10-23T22:29:30Z ERROR tor_chanmgr::mgr::state: error: internal error (bug) at crates/tor-chanmgr/src/mgr/state.rs:611:26: foo
Backtrace [{ fn: "tor_error::internal::ie_backtrace::capture", file: "./crates/tor-error/src/internal.rs", line: 21 }, { fn: "tor_error::internal::Bug::new_inner", file: "./crates/tor-error/src/internal.rs", line: 105 }, [...]

This seems to be due to:

impl Display for Captured {
    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
        Debug::fmt(&self.0, f)
    }
}

in crates/tor-error/src/internal.rs.

Maybe there was a reason for using the Debug impl rather than Display?