fix: replaced deprecated lazy=True with lazy='select' in SQLAlchemy m…

[ishansurdi]

…odels

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Ticket

Fixes: JIRA_TICKET_LINK

Description

Goal

Replace deprecated lazy=True in SQLAlchemy relationships with lazy="select" as per SQLAlchemy 2.x migration guidelines.

Changes

• Replaced all instances of lazy=True with lazy="select" in models.
• Ensured code compatibility with SQLAlchemy 2.x

Future Tasks (optional)

• Monitor for any side effects in relationship loading.
• Upgrade other deprecated SQLAlchemy APIs if present.

How has this been tested?

• Verified that relationship loading behavior remains unchanged.

To-do before merge (optional)

• Get confirmation from reviewer that no eager/lazy loading assumptions are broken.

Checklist

Fill with x for completed.

• [ x] My code follows the style guidelines of this project
• [ x] I have reviewed my own code to ensure good quality
• I have tested the functionality of my code to ensure it works as intended
• I have resolved merge conflicts