[3.8] ReactiveSequence not halting children after a running child anymore

[afrixs]

There was recently a backporting update of 3.8 where this line changed from

for (size_t i = index + 1; i < childrenCount(); i++)

to

for (size_t i = 0; i < index; i++)

making ReactiveSequence unable to halt children that were previously running after a child whose state has just switched from SUCCESS to RUNNING. Meanwhile the bug seems to have been fixed in 4.x, but the fix has not been backported to 3.8. Is it possible to backport the fix of this problem as well? Thank you

[facontidavide]

send a PR please

[afrixs]

I don't dare to make an overall backport merge PR, but #817 is a backport of the particular commit that fixes the problem (+ a small optional defaults-changing commit that keeps the backward compatibility to v3.8.5)