[REF] Refactor Contact Search form to use standardised getSortID func…

[seamuslee001]

…tion

Overview

Minor refactor to Contact Search form to use standardised getSortID function

Before

Duplicated code used to get Sort ID

After

Consolidated function used to getSortID

ping @eileenmcnaughton @demeritcowboy

[civibot]

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[eileenmcnaughton]

Change makes sense - sort still works