cmdscan and consoles potential unitialized variable usages

[atcuno]

@superponible there is a repeated pattern in cmdscan and consoles where a potential uninitialized variable could be referenced if the loop does not find them. Can you just fix these to set the variables to None before?

command_history:

https://github.com/volatilityfoundation/volatility3/blob/develop/volatility3/framework/plugins/windows/cmdscan.py#L269

Consoles proc_id:

https://github.com/volatilityfoundation/volatility3/blob/develop/volatility3/framework/plugins/windows/consoles.py#L98C36-L98C43

Also console_info:

https://github.com/volatilityfoundation/volatility3/blob/develop/volatility3/framework/plugins/windows/consoles.py#L775