fix(ui): Hide "Sync" button in resource details header for Un-managed resources.

[surajyadav1108]

Part of #21578

With this now resource details will show sync button for managed resources only, similar to actionitems for a resource

hide-sync-for-unmanaged.mp4

Checklist:

• Either (a) I've created an enhancement proposal and discussed it with the community, (b) this is a bug fix, or (c) this does not need to be in the release notes.
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