v3.2.0

Minor Changes

• 7307139: Finish the Mcu → Mtb rename in the value useMtb() returns: mcuConfig,
  setMcuConfig and getMcuColor are now mtbConfig, setMtbConfig and
  getMtbColor.

  The mcu* keys stay on the context value as deprecated aliases holding the very
  same references as their mtb* counterparts, so existing destructuring keeps
  working until the next major.

  - const { setMcuConfig, getMcuColor } = useMtb();
  + const { setMtbConfig, getMtbColor } = useMtb();

  The id of the injected <style> tag stays mcu-styles, since user CSS and
  scripts may target it.