CAMEL-23267: Remove outdated changes on compress

[essobedo]

Fix for https://issues.apache.org/jira/browse/CAMEL-23267 (4.19)

Motivation

We can have a lot of CPU consumption in case of adding and removing keys, like when we use MemoryIdempotentRepository

Modifications:

• Improve the compression of the changes by ignoring changes whose key is no longer in the map

[github-actions]

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[davsclaus]

Thanks I have backported to 4.18 and 4.14 branches also