Include python-docx as a Default Dependency

[nickvanlandschoot]

Description:
In v2.7.7, an issue (#1738) prevented custom agents from loading in the playground unless python-docx was manually installed. While the playground functionality has been restored, users are still required to install python-docx themselves. Including python-docx as a default dependency would improve the developer experience by removing this manual step.

Proposed Solution:
Add python-docx to the default requirements to ensure all core functionalities work out of the box.

Impact:
This change is non-breaking and improves the default setup experience for users without affecting AI/ML components or other dependencies