feat: log delta differences for read-only resources when spec changes

[a-hilaly]

Add informational logging when a read-only resource's desired state
differs from its current state. This helps operators understand what
changes would have been applied if the resource wasn't in read-only mode.

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[a-hilaly]

/retest

[knottnt]

/retest

[a-hilaly]

/retest

[ack-prow]

@a-hilaly: The following tests failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
verify-attribution	eeffc02	link	false	/test verify-attribution
unit-test	eeffc02	link	true	/test unit-test
sagemaker-controller-test	eeffc02	link	true	/test sagemaker-controller-test

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[knottnt]

👍

[ack-prow]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: a-hilaly, knottnt

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