CLOUDP-299772: Remove last skipped config

[josvazg]

Replace it by:

• Clearing the resource lists for migrated independent CRDs at skip time. So that they will not eagerly try to take over the full resource list when skip is removed and potentially conflict with existing independent CRs.
• Without last applied config, non greediness behaviour kicks in and the legacy embedded resource controller will not delete resources from Atlas that does not know about.

Testing: Added one test verifying that migrated resource lists get cleared when the project reconcile is skipped, and several tests cases per migrated resource to verify non greedy behaviour conforms to expectations.

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