Fix missing __typename checks and standalone var declarations

Add __typename to GraphQL queries and type guards in risk view,
risk list, user view, and user list commands to prevent silent
garbage output when a wrong node type ID is passed. Wrap
standalone var declarations in var () blocks per style guide.

Signed-off-by: Bryan Frimin <bryan@getprobo.com>

cmd/proboctl/main.go

@@ -24,7 +24,9 @@ import (
 	"go.probo.inc/probo/pkg/cmd/root"
 )
 
-var version string = "unknown"
+var (
+	version string = "unknown"
+)
 
 func main() {
 	ios := iostreams.System()