Discovered in #2061

When using DEFMT + RTT + probe-rs the exception handler isn't able to produce any output. I get a message like WARN probe_rs::util::rtt::client: RTT control block corrupted (write pointer is 1006700828 while buffer size is 1024 for up channel 0 (defmt)), re-attaching as soon as the exception handler is trying to write to RTT. Tested at least on ESP32-S3 - most probably it's like that on all the Xtensas (needs to get checked)

This might have worked before

This works fine on RISC-V (tested on ESP32-C6)