Show an appropriate error if the ARM64 installer is run on non-ARM
Windows or if the x64 installer is run on a 32-bit system, and set the
correct architecture in `CurrentVersion\Uninstall` registry key.
Also fix `x86`/`x64` being swapped in the registry
(https://groups.google.com/g/zotero-dev/c/1Aju4t2TNTo/m/Ga4V8vLrAQAJ)