CEM doesn't work during tracy initialization

[broskoTT]

I saw this while working on #345 and tenstorrent/tt-metal#15564

To repro, add tt_ClusterDescriptor::create() to tt_metal/llrt/get_platform_architecture.hpp, then do this:

./build_metal.sh --build-all --enable-ccache --enable-profiler
./create_venv.sh
./tests/scripts/run_profiler_regressions.sh

For some reason the create-ethernet-map call hangs, and I can't figure out why.
This is called from Hal::Hal() > tt_metal/llrt/get_platform_architecture.hpp, and this seems like a test intialization. What's more interesting is that this works at other places. For instance, in the referenced PR I also changed detect_arch to tt_ClusterDescriptor::create() in tests/tt_metal/test_utils/env_vars.hpp and that call passes when later it is called from the tests itself.

I compared ENV variables and ls /dev/tenstorrent and they're exactly the same for the two calls.

Here's the stack that I managed to extract with GDB

This blocks removing detect_arch() from our code