Inspection False Positive: Rule or Checkpoint name 'check1' has not been defined yet

[iromeo]

``` shell.executable("bash")

rule all:
input:
'result.r1',
'result.c1', # targeting checkpoint output overrides input
'result.c2'

def rule1_input(wc):
checkpoints.check1.get(**wc).output[0]
return "result.r2"

rule r1:
input:
rule1_input
output:
'result.r1',
shell:
'echo {input} > {output}'

rule r2:
output:
'result.r2'
shell:
'echo r2 > {output}'

def check1_input(wc):
checkpoints.check2.get(**wc).output[0]
return 'result.r3'

checkpoint check1:
input:
check1_input
output:
'result.c1'
shell:
'echo c1 > {output}'

checkpoint check2:
output:
'result.c2'
shell:
'echo c2 > {output}'

rule r3:
output:
'result.r3'
shell:
'echo r3 > {output}'

no error in 8.20.6