How to do Android v2 signing

[paulober]

Maui by default does v3 signatures with dotnet publish. I have several users report that they are unable to install the apk because of an Android error message that the package is invalid though I can install it on my test device and the sim. I assume this is because compared to the old flutter dev build we had this does only v3 and no v2 signing and some ROMs may require v2 signatures. How can I do that with MAUI in my CI?