mono-xsp4 stop does not detect pid correctly

[hyproman]

Running /etc/init.d/mono-xsp4 stop does not actually stop the running process because the commands used to detect the PID do not grab the entire PID. In my case (running Ubuntu 20.04), the correct PID being 899 was resolved to 89:

$ ps aux | grep -v grep | grep 'xsp4.exe'
www-data     899  0.1  0.5 286532 41724 ?        Sl   20:23   0:00 /usr/bin/mono /usr/lib/mono/4.5/xsp4.exe --port 8084 --address 0.0.0.0 --appconfigdir /etc/xsp4 --nonstop

$ ps aux | grep -v grep | grep 'xsp4.exe' | cut -c 10-15
    89

This fix reworks the command chain to use awk instead of cut to grab the whole PID.