bpf: Skip task with pid=1 in sendsignalcommon()
This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.10.167 by commit a1c0263f1eb4deee132e11e52ee6982435460d81. For more details please see the references link.