PRESIDECMS-3243 many to one admin view

[seakchiew]

Since the admin datamanager is getting the data from versioned table, some of the deleted record via cascade delete / set null from relationship table is not reflected properly in the version table, hence a quick check if object exists before generating the link would help to hide link with not found / deleted record.

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Note

Low Risk
Low risk: adds a guard to avoid rendering admin links/labels when the related record no longer exists, which should only change display behavior for stale FK values.

Overview
Prevents the Many-to-One admin renderer (ManyToOne.cfc) from generating a related-record link/label when the target record is missing.

adminView now checks presideObjectService.dataExists() (and that the related object name is non-empty) before calling event.buildAdminLink() and renderLabel(), avoiding broken links for deleted/cascaded relationships.

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