internal: no_std thread local - #6356
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I've re-implemented
LocalKeyin terms of python's tss api.There is currently only one place that uses thread locals, and that is
internal/state.rs. It stores theATTACH_COUNTin a thread localCell. If the plan is to eventually re-write that file using thePyThreadStatefunctions, it can probably be done without using thread local storage at all.