Intent of 0, -1, +3

All 5 exact tests in this concept. Every test is marked by where it enters the hierarchy.

go.temporal.io/server/common/tqid/TestInvalidRpcNames//_sys/list0/-1 Introduced here
go.temporal.io/server/common/tqid/TestInvalidRpcNames//_sys/list0/0 Introduced here
go.temporal.io/server/common/tqid/TestInvalidRpcNames//_sys/list0/abc Introduced here
go.temporal.io/server/common/tqid/TestInvalidRpcNames//_sys/list0/verxyz#23 Introduced here
go.temporal.io/server/common/tqid/TestInvalidRpcNames//_sys/list0/verxyz:23 Introduced here