Convert prevNextCache to standard Cache Defintiion format

[seamuslee001]

Overview

This is a subset of #14487 and aims to only convert the PrevNextCache to standardised Cache definition function

Before

Used deprecated cache methods

After

Used standard Cache definition methods

Technical Details

If the PR introduces noteworthy technical changes, please describe them here. Provide code snippets if necessary

Comments

To Test this, someone performing an r-run should do the following

1. Ensure that under misc the prevNext service is SQL backed or auto.
2. Perform a search in advanced search.
3. Confirm that the cache key has been stored in the civicrm_cache table sensibly
4. Open a new table and copy the Advanced search URL with cache key in it and load in new tab confirm that the advanced search pane is the same
5. Do the same but this time with CiviCampaign Search
6. Run an update to the civicrm_cache table altering the created_date column for the keys to be > 2 days previous from now
7. create and run a Cli script calling CRM_Core_BAO_PrevNextCache::cleanupCache() a la

<?php
civicrm_initialize();
CRM_Core_BAO_PrevNextCache::cleanupCache();

and then verify that the cache keys you had altered in 6 are now removed from the database and the relevant rows for the same cache keys are gone from civicrm_prevnext_cache also

[civibot]

(Standard links)

• If this is your first pull-request for CiviCRM, please browse CONTRIBUTING.md for information about the development and testing processes.
• If you are reviewing this pull-request, you may wish to consult the test sites and the Review Standards (long template, short template).

[seamuslee001]

Jenkins re test this please

[eileenmcnaughton]

Ran through the above & it all seemed to work....