RP2040 (and likely other) broken with multiple interrupts when disabling

[Kytezign]

From the RP2040 documentation, the Interrupt Clear-Enable Register will clear (disable) all enabled interrupts when written with the or as it currently is in:
https://github.com/ZigEmbeddedGroup/microzig/blob/main/core/src/cpus/cortex_m.zig#L417

This seems to be a pervasive bug assuming this is true across all the cortex_m cpus and multiple register accesses.