get_sysType() returns incorrect value for 32 bit userspace with 64 bit kernel

[stuartf]

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Configuration

Operating system: Raspbian 12.1

PlatformIO Version (platformio --version): 6.1.11

Description of problem

get_systype() in platformio/util.py returns the wrong architecture when run in docker on a 64 bit kernel with 32 bit userspace

Steps to Reproduce

1. docker run -it python /bin/bash
2. pip install platformio
3. python
4. from platformio import util
5. util.get_systype()

Actual Results

'linux_aarch64'

Expected Results

'linux_armv7l'

Related issues

esphome/issues#3092
esphome/issues#4959