🌱 Use ClientUncachedObjects name consistently

[enxebre]

What this PR does / why we need it:
Align naming on (client)UncachedObjects for ClusterCacheTrackerOptions, ClusterCacheTracker and NewDelegatingClientInput

Which issue(s) this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close the issue(s) when PR gets merged):
Fixes #

[enxebre]

/retest

[vincepri]

/approve
/lgtm

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: vincepri

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[vincepri]

/retest

[vincepri]

/retest

[vincepri]

@enxebre Can you rebase on the main branch?

[k8s-ci-robot]

@enxebre: The following test failed, say /retest to rerun all failed tests:

Test name	Commit	Details	Rerun command
pull-cluster-api-apidiff-main	b82cdab	link	/test pull-cluster-api-apidiff-main

Full PR test history. Your PR dashboard. Please help us cut down on flakes by linking to an open issue when you hit one in your PR.

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[vincepri]

/lgtm