Fix the waiting on EIP number label again (ethereum#5448)

* Fix the waiting on EIP number label again

* Add extra check

Make sure that the EIP property exists

* Wait... if we want no label on false then this works!

config/.jekyll-labels.yml

@@ -5,7 +5,7 @@
 "type: Informational": this?.new?.type == "Informational"
 "type: Meta": this?.new?.type == "Meta"
 "type: EIP1 (Process)": this?.old?.status == "Living" || this?.old?.eip == "<to be assigned>"
-"waiting: EIP number": "!(this?.new?.eip > 0)"
+"waiting: EIP number": isNaN(this?.new?.eip)
 "classification: new EIP": this?.new?.eip && !this?.old?.eip
 "classification: update EIP": this?.new?.eip && this?.old?.eip && this?.new?.status == this?.old?.status
 "classification: EIP status change": this?.new?.eip && this?.old?.eip && this?.new?.status != this?.old?.status