Passing int term in term_exists then parent param not respected

[the-hercules]

Fixes Ticket #55358

This PR addresses an issue in the term_exists function where the parent_term was not being respected when a term with an integer ID was passed along with a parent term ID. The function would only check if the term with the specified ID existed, ignoring the parent-child relationship.

Changes Made:

• Updated the term_exists function to include the parent parameter in the query arguments when the term is an integer and a parent term ID is specified.
• Added a condition to check for the presence of a parent term ID and include it in the query arguments.

[github-actions]

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[github-actions]

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