Add indexes on patient appointment start_date_time and status columns…

[ojwanganto]

This PR adds indexes on start_date_time and status columns for improved query perfornance

[ojwanganto]

I have updated the PR. Please re-review @gsluthra

[ojwanganto]

ping @gsluthra @angshu

[rahu1ramesh]

@ojwanganto Thank you for the update! The changeset correctly adds an index to the start_date_time column in the patient_appointment table. However, to prevent duplicate index creation errors, it would be best to include a precondition to check if the index already exists before creating it.

Please add the following precondition before the <createIndex> tag:

<preConditions onFail="MARK_RAN">
    <not>
        <indexExists indexName="patient_appointment_start_date_time_index" tableName="patient_appointment"/>
    </not>
</preConditions>

Adding a precondition would prevents redundant index creation, help avoid migration failures if the index already exists and will ensure safe and idempotent schema updates.

Could you please update the changeset accordingly? Let me know if you have any questions. Thanks!