Closes #28533

Release Notes:

- Linux: Improved parsing of `ZED_DEVICE_ID` environment variable in an
attempt to fix some cases where it erroneously failed to parse. The
`ZED_DEVICE_ID` is now expected to always be a 4 digit hexadecimal
number (as it is in the output of `lcpci`) with an optional `0x` or `0X`
prefix.