hil-tests might stall at assert_eq! etc.

[bjoernQ]

Repro:

Force a test to fail on assert_eq! - e.g.

@@ -46,6 +46,7 @@ mod tests {
         block_buf[..plaintext.len()].copy_from_slice(plaintext);

         let mut block = block_buf.clone();
+        block[0] = 0;
         ctx.aes.process(&mut block, Mode::Encryption128, keybuf);
         assert_eq!(block, encrypted_message);
     }

And run it - e.g. cargo xtask run-tests esp32c6 -t aes - execution will stall after printing the error

using defmt::assert_eq! either directly or by adding a use defmt::*; before use super::*; makes it work as expected

[bugadani]

Yeah for some reason assert_eq doesn't work with big(ish?) arrays very well. I'm not sure if this is a probe-rs issue (i.e. the test ends up timing out, or something like that), we already have issues with semihosting-printing out messages getting cut off.