Update docs to document the behaviour of setting the enabled flag to false

MR: feat: Updated docs to reflect behaviour when RD... (!137560 - merged)

Description

As a user, I want to understand clearly what are the implications of setting the enabled flag in the remote development configuration to false are.

Acceptance Criteria

• Add a new section Disabling the agent to the documentation to explain the consequences of toggling the remote_development.enabled flag.