Set initial value of `length` to `0`.
Fixes regression introduced by e544742156 (diff-a85dbe0991a7577ea24b49374e9ae90b)
where the `length` property ceased to have initial value.
Closes #21980
PR Close #21982
Set initial value of `length` to `0`.
Fixes regression introduced by e544742156 (diff-a85dbe0991a7577ea24b49374e9ae90b)
where the `length` property ceased to have initial value.
Closes #21980
PR Close #21982