[ML] autoscaling context current capacity could be null, this commit handles that #74822
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context commit may be
null
. This should only really happen early in a cluster's life cycle or if a node was just recently brought online. Mainly because the current node sizes have not been discovered yet and cached.This change should really have been part of #74691 and was incorporated into the backports of that PR, which is the reason why this PR only needs to go into master.