Description

Observed Behavior:
The instance type cache size grows linearly with the number of UnavailableOfferings cache modifications, bounded by the TTL of the instance type cache.

Expected Behavior:
The instance type cache should be cleared whenever UnavailableOfferings changes, since any previously cached values will no longer be accessible as the UnavailableOfferings seqnum is part of the cache key. I have verified that this is the cause of the observed memory usage increase by comparing behavior with this patch: e6cfa31

Reproduction Steps (Please include YAML):
N/A
Versions:

• Chart Version: 1.0.8
• Kubernetes Version (kubectl version): v1.29.10-eks-7f9249a

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